420133444 has 12 divisors (see below), whose sum is σ = 778482684. Its totient is φ = 197709824.

The previous prime is 420133397. The next prime is 420133451. The reversal of 420133444 is 444331024.

It can be written as a sum of positive squares in 2 ways, for example, as 305900100 + 114233344 = 17490^2 + 10688^2 .

It is a super-2 number, since 2×420133444² = 353024221534602272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3089149 + ... + 3089284.

It is an arithmetic number, because the mean of its divisors is an integer number (64873557).

Almost surely, 2^420133444 is an apocalyptic number.

It is an amenable number.

420133444 is a deficient number, since it is larger than the sum of its proper divisors (358349240).

420133444 is a wasteful number, since it uses less digits than its factorization.

420133444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6178454 (or 6178452 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 420133444 is about 20497.1569735903. The cubic root of 420133444 is about 748.9665434256.

Adding to 420133444 its reverse (444331024), we get a palindrome (864464468).

The spelling of 420133444 in words is "four hundred twenty million, one hundred thirty-three thousand, four hundred forty-four".