42921252 has 60 divisors (see below), whose sum is σ = 122415216. Its totient is φ = 13005360.

The previous prime is 42921227. The next prime is 42921269. The reversal of 42921252 is 25212924.

It is a happy number.

42921252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2458 + ... + 9585.

Almost surely, 2^42921252 is an apocalyptic number.

It is an amenable number.

42921252 is an abundant number, since it is smaller than the sum of its proper divisors (79493964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42921252 is a wasteful number, since it uses less digits than its factorization.

42921252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12070 (or 12059 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 42921252 is about 6551.4312939998. The cubic root of 42921252 is about 350.1258105532.

The spelling of 42921252 in words is "forty-two million, nine hundred twenty-one thousand, two hundred fifty-two".