42521464 has 16 divisors (see below), whose sum is σ = 81424800. Its totient is φ = 20808192.

The previous prime is 42521461. The next prime is 42521467. The reversal of 42521464 is 46412524.

It is an interprime number because it is at equal distance from previous prime (42521461) and next prime (42521467).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42521461) 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, 56169 + ... + 56920.

It is an arithmetic number, because the mean of its divisors is an integer number (5089050).

Almost surely, 2^42521464 is an apocalyptic number.

It is an amenable number.

42521464 is a deficient number, since it is larger than the sum of its proper divisors (38903336).

42521464 is a wasteful number, since it uses less digits than its factorization.

42521464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113142 (or 113138 counting only the distinct ones).

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

The square root of 42521464 is about 6520.8484110582. The cubic root of 42521464 is about 349.0353409585.

Adding to 42521464 its reverse (46412524), we get a palindrome (88933988).

The spelling of 42521464 in words is "forty-two million, five hundred twenty-one thousand, four hundred sixty-four".