42451264 has 14 divisors (see below), whose sum is σ = 84239354. Its totient is φ = 21225600.

The previous prime is 42451237. The next prime is 42451291. The reversal of 42451264 is 46215424.

It is an interprime number because it is at equal distance from previous prime (42451237) and next prime (42451291).

It can be written as a sum of positive squares in only one way, i.e., 32262400 + 10188864 = 5680^2 + 3192^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331587 + ... + 331714.

Almost surely, 2^42451264 is an apocalyptic number.

It is an amenable number.

42451264 is a deficient number, since it is larger than the sum of its proper divisors (41788090).

42451264 is an equidigital number, since it uses as much as digits as its factorization.

42451264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663313 (or 663303 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 42451264 is about 6515.4634524338. The cubic root of 42451264 is about 348.8431574127.

Adding to 42451264 its reverse (46215424), we get a palindrome (88666688).

The spelling of 42451264 in words is "forty-two million, four hundred fifty-one thousand, two hundred sixty-four".