42725812 has 48 divisors (see below), whose sum is σ = 82059264. Its totient is φ = 19404000.

The previous prime is 42725797. The next prime is 42725819. The reversal of 42725812 is 21852724.

It is a happy number.

It is a super-2 number, since 2×42725812² = 3650990022118688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42725819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202387 + ... + 202597.

It is an arithmetic number, because the mean of its divisors is an integer number (1709568).

Almost surely, 2^42725812 is an apocalyptic number.

It is an amenable number.

42725812 is a deficient number, since it is larger than the sum of its proper divisors (39333452).

42725812 is a wasteful number, since it uses less digits than its factorization.

42725812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 338 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 42725812 is about 6536.4984510057. The cubic root of 42725812 is about 349.5935744935.

The spelling of 42725812 in words is "forty-two million, seven hundred twenty-five thousand, eight hundred twelve".