421513004 has 24 divisors (see below), whose sum is σ = 823424448. Its totient is φ = 187140240.

The previous prime is 421512979. The next prime is 421513007. The reversal of 421513004 is 400315124.

It is a super-2 number, since 2×421513004² = 355346425082208032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421513007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109502 + ... + 113285.

It is an arithmetic number, because the mean of its divisors is an integer number (34309352).

Almost surely, 2^421513004 is an apocalyptic number.

421513004 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

421513004 is a deficient number, since it is larger than the sum of its proper divisors (401911444).

421513004 is a wasteful number, since it uses less digits than its factorization.

421513004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222845 (or 222843 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 421513004 is about 20530.7818652871. The cubic root of 421513004 is about 749.7854224663.

Adding to 421513004 its reverse (400315124), we get a palindrome (821828128).

The spelling of 421513004 in words is "four hundred twenty-one million, five hundred thirteen thousand, four".