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142512025 = 5223247847
BaseRepresentation
bin10000111111010…
…00111110011001
3100221011100202011
420133220332121
5242440341100
622050305521
73350221645
oct1037507631
9327140664
10142512025
1173498437
123b8882a1
13236a9856
1414cd9c25
15c7a0bba
hex87e8f99

142512025 has 12 divisors (see below), whose sum is σ = 184398912. Its totient is φ = 109052240.

The previous prime is 142512011. The next prime is 142512031. The reversal of 142512025 is 520215241.

It is not a de Polignac number, because 142512025 - 29 = 142511513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142511987 and 142512005.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123349 + ... + 124498.

It is an arithmetic number, because the mean of its divisors is an integer number (15366576).

Almost surely, 2142512025 is an apocalyptic number.

It is an amenable number.

142512025 is a deficient number, since it is larger than the sum of its proper divisors (41886887).

142512025 is a wasteful number, since it uses less digits than its factorization.

142512025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247880 (or 247875 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 142512025 is about 11937.8400475128. The cubic root of 142512025 is about 522.3366552122.

Adding to 142512025 its reverse (520215241), we get a palindrome (662727266).

The spelling of 142512025 in words is "one hundred forty-two million, five hundred twelve thousand, twenty-five".

Divisors: 1 5 23 25 115 575 247847 1239235 5700481 6196175 28502405 142512025