42551304 has 16 divisors (see below), whose sum is σ = 106378320. Its totient is φ = 14183760.

The previous prime is 42551303. The next prime is 42551351. The reversal of 42551304 is 40315524.

It is a super-2 number, since 2×42551304² = 3621226944200832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 1772971 = 42551304 / (4 + 2 + 5 + 5 + 1 + 3 + 0 + 4).

It is not an unprimeable number, because it can be changed into a prime (42551303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886462 + ... + 886509.

It is an arithmetic number, because the mean of its divisors is an integer number (6648645).

Almost surely, 2^42551304 is an apocalyptic number.

It is an amenable number.

42551304 is an abundant number, since it is smaller than the sum of its proper divisors (63827016).

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

42551304 is a wasteful number, since it uses less digits than its factorization.

42551304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772980 (or 1772976 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 42551304 is about 6523.1360556101. The cubic root of 42551304 is about 349.1169685901.

Adding to 42551304 its reverse (40315524), we get a palindrome (82866828).

The spelling of 42551304 in words is "forty-two million, five hundred fifty-one thousand, three hundred four".