421440785 has 8 divisors (see below), whose sum is σ = 507258816. Its totient is φ = 336132720.

The previous prime is 421440751. The next prime is 421440791. The reversal of 421440785 is 587044124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 421440785 - 2⁸ = 421440529 is a prime.

It is a super-2 number, since 2×421440785² = 355224670522832450, 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 7 ways as a sum of consecutive naturals, for example, 125669 + ... + 128978.

It is an arithmetic number, because the mean of its divisors is an integer number (63407352).

Almost surely, 2^421440785 is an apocalyptic number.

It is an amenable number.

421440785 is a deficient number, since it is larger than the sum of its proper divisors (85818031).

421440785 is a wasteful number, since it uses less digits than its factorization.

421440785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254983.

The product of its (nonzero) digits is 35840, while the sum is 35.

The square root of 421440785 is about 20529.0229918523. The cubic root of 421440785 is about 749.7425990772.

The spelling of 421440785 in words is "four hundred twenty-one million, four hundred forty thousand, seven hundred eighty-five".