42551736 has 16 divisors (see below), whose sum is σ = 106379400. Its totient is φ = 14183904.

The previous prime is 42551723. The next prime is 42551749. The reversal of 42551736 is 63715524.

It is an interprime number because it is at equal distance from previous prime (42551723) and next prime (42551749).

It is a super-2 number, since 2×42551736² = 3621300473227392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42551697 and 42551706.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886471 + ... + 886518.

Almost surely, 2^42551736 is an apocalyptic number.

It is an amenable number.

42551736 is an abundant number, since it is smaller than the sum of its proper divisors (63827664).

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

42551736 is a wasteful number, since it uses less digits than its factorization.

42551736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772998 (or 1772994 counting only the distinct ones).

The product of its digits is 25200, while the sum is 33.

The square root of 42551736 is about 6523.1691684334. The cubic root of 42551736 is about 349.1181500503.

The spelling of 42551736 in words is "forty-two million, five hundred fifty-one thousand, seven hundred thirty-six".