421433402 has 16 divisors (see below), whose sum is σ = 681993312. Its totient is φ = 194160240.

The previous prime is 421433377. The next prime is 421433447. The reversal of 421433402 is 204334124.

It is a super-2 number, since 2×421433402² = 355212224642587208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 653 + ... + 29039.

It is an arithmetic number, because the mean of its divisors is an integer number (42624582).

Almost surely, 2^421433402 is an apocalyptic number.

421433402 is a deficient number, since it is larger than the sum of its proper divisors (260559910).

421433402 is a wasteful number, since it uses less digits than its factorization.

421433402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28973.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 421433402 is about 20528.8431724732. The cubic root of 421433402 is about 749.7382209359.

Adding to 421433402 its reverse (204334124), we get a palindrome (625767526).

The spelling of 421433402 in words is "four hundred twenty-one million, four hundred thirty-three thousand, four hundred two".