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142582469 = 721919751
BaseRepresentation
bin10000111111110…
…10001011000101
3100221021221101012
420133322023011
5243000114334
622052012005
73350634221
oct1037721305
9327257335
10142582469
1173536357
123b901005
1323702933
1414d17781
15c7b69ce
hex87fa2c5

142582469 has 4 divisors (see below), whose sum is σ = 142609440. Its totient is φ = 142555500.

The previous prime is 142582387. The next prime is 142582471. The reversal of 142582469 is 964285241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 964285241 = 7949121309.

It is a cyclic number.

It is not a de Polignac number, because 142582469 - 220 = 141533893 is a prime.

It is a super-2 number, since 2×1425824692 = 40659520932271922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142582369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2657 + ... + 17094.

It is an arithmetic number, because the mean of its divisors is an integer number (35652360).

Almost surely, 2142582469 is an apocalyptic number.

It is an amenable number.

142582469 is a deficient number, since it is larger than the sum of its proper divisors (26971).

142582469 is an equidigital number, since it uses as much as digits as its factorization.

142582469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26970.

The product of its digits is 138240, while the sum is 41.

The square root of 142582469 is about 11940.7901329853. The cubic root of 142582469 is about 522.4227050790.

The spelling of 142582469 in words is "one hundred forty-two million, five hundred eighty-two thousand, four hundred sixty-nine".

Divisors: 1 7219 19751 142582469