421294398 has 32 divisors (see below), whose sum is σ = 965675520. Its totient is φ = 120030240.

The previous prime is 421294373. The next prime is 421294399. The reversal of 421294398 is 893492124.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421294399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1108 + ... + 29048.

It is an arithmetic number, because the mean of its divisors is an integer number (30177360).

Almost surely, 2^421294398 is an apocalyptic number.

421294398 is an abundant number, since it is smaller than the sum of its proper divisors (544381122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421294398 is a wasteful number, since it uses less digits than its factorization.

421294398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28312.

The product of its digits is 124416, while the sum is 42.

The square root of 421294398 is about 20525.4573152464. The cubic root of 421294398 is about 749.6557815980.

The spelling of 421294398 in words is "four hundred twenty-one million, two hundred ninety-four thousand, three hundred ninety-eight".