421436785 has 32 divisors (see below), whose sum is σ = 650870784. Its totient is φ = 254232000.

The previous prime is 421436779. The next prime is 421436801. The reversal of 421436785 is 587634124.

421436785 = T₂₂₅₄ + T₂₂₅₅ + ... + T₂₄₀₈.

It is a de Polignac number, because none of the positive numbers 2^k-421436785 is a prime.

It is a super-2 number, since 2×421436785² = 355217927502272450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5721 + ... + 29590.

It is an arithmetic number, because the mean of its divisors is an integer number (20339712).

Almost surely, 2^421436785 is an apocalyptic number.

It is an amenable number.

421436785 is a deficient number, since it is larger than the sum of its proper divisors (229433999).

421436785 is a wasteful number, since it uses less digits than its factorization.

421436785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35365.

The product of its digits is 161280, while the sum is 40.

The square root of 421436785 is about 20528.9255685727. The cubic root of 421436785 is about 749.7402270715.

The spelling of 421436785 in words is "four hundred twenty-one million, four hundred thirty-six thousand, seven hundred eighty-five".