42247252 has 12 divisors (see below), whose sum is σ = 75036640. Its totient is φ = 20808216.

The previous prime is 42247237. The next prime is 42247253. The reversal of 42247252 is 25274224.

It is a self number, because there is not a number n which added to its sum of digits gives 42247252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42247253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78552 + ... + 79087.

Almost surely, 2^42247252 is an apocalyptic number.

It is an amenable number.

42247252 is a deficient number, since it is larger than the sum of its proper divisors (32789388).

42247252 is a wasteful number, since it uses less digits than its factorization.

42247252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157710 (or 157708 counting only the distinct ones).

The product of its digits is 8960, while the sum is 28.

The square root of 42247252 is about 6499.7886119473. The cubic root of 42247252 is about 348.2834371169.

It can be divided in two parts, 4224 and 7252, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 42247252 in words is "forty-two million, two hundred forty-seven thousand, two hundred fifty-two".