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142957880389 = 375002377239
BaseRepresentation
bin1000010100100011110…
…1000010010001000101
3111122222222110202211201
42011020331002101011
54320234204133024
6145401323302501
713220425635202
oct2051075022105
9448888422751
10142957880389
115569aaa6495
122385837aa31
1310633619c8c
146cc23ccca9
153aba745744
hex2148f42445

142957880389 has 8 divisors (see below), whose sum is σ = 146826442880. Its totient is φ = 139089572496.

The previous prime is 142957880323. The next prime is 142957880413. The reversal of 142957880389 is 983088759241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142957880389 - 211 = 142957878341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142957880389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142957880789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1812232 + ... + 1889470.

It is an arithmetic number, because the mean of its divisors is an integer number (18353305360).

Almost surely, 2142957880389 is an apocalyptic number.

It is an amenable number.

142957880389 is a deficient number, since it is larger than the sum of its proper divisors (3868562491).

142957880389 is an equidigital number, since it uses as much as digits as its factorization.

142957880389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127299.

The product of its (nonzero) digits is 34836480, while the sum is 64.

The spelling of 142957880389 in words is "one hundred forty-two billion, nine hundred fifty-seven million, eight hundred eighty thousand, three hundred eighty-nine".

Divisors: 1 37 50023 77239 1850851 2857843 3863726497 142957880389