42101287825 has 24 divisors (see below), whose sum is σ = 54558311616. Its totient is φ = 32167608000.

The previous prime is 42101287819. The next prime is 42101287841. The reversal of 42101287825 is 52878210124.

It is not a de Polignac number, because 42101287825 - 2³ = 42101287817 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 324690 + ... + 435460.

It is an arithmetic number, because the mean of its divisors is an integer number (2273262984).

Almost surely, 2^42101287825 is an apocalyptic number.

It is an amenable number.

42101287825 is a deficient number, since it is larger than the sum of its proper divisors (12457023791).

42101287825 is a wasteful number, since it uses less digits than its factorization.

42101287825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111465 (or 111460 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 40.

Adding to 42101287825 its reverse (52878210124), we get a palindrome (94979497949).

The spelling of 42101287825 in words is "forty-two billion, one hundred one million, two hundred eighty-seven thousand, eight hundred twenty-five".