421405294 has 8 divisors (see below), whose sum is σ = 665376840. Its totient is φ = 199613016.

The previous prime is 421405291. The next prime is 421405307. The reversal of 421405294 is 492504124.

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

It is a super-2 number, since 2×421405294² = 355164843622452872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421405291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5544769 + ... + 5544844.

It is an arithmetic number, because the mean of its divisors is an integer number (83172105).

Almost surely, 2^421405294 is an apocalyptic number.

421405294 is a deficient number, since it is larger than the sum of its proper divisors (243971546).

421405294 is a wasteful number, since it uses less digits than its factorization.

421405294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11089634.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 421405294 is about 20528.1585633003. The cubic root of 421405294 is about 749.7215523390.

The spelling of 421405294 in words is "four hundred twenty-one million, four hundred five thousand, two hundred ninety-four".