421354437 has 8 divisors (see below), whose sum is σ = 642063936. Its totient is φ = 240773952.

The previous prime is 421354403. The next prime is 421354447. The reversal of 421354437 is 734453124.

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

It is not a de Polignac number, because 421354437 - 2¹⁵ = 421321669 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421354398 and 421354407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421354447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10032228 + ... + 10032269.

It is an arithmetic number, because the mean of its divisors is an integer number (80257992).

Almost surely, 2^421354437 is an apocalyptic number.

It is an amenable number.

421354437 is a deficient number, since it is larger than the sum of its proper divisors (220709499).

421354437 is a wasteful number, since it uses less digits than its factorization.

421354437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20064507.

The product of its digits is 40320, while the sum is 33.

The square root of 421354437 is about 20526.9198127727. The cubic root of 421354437 is about 749.6913912538.

The spelling of 421354437 in words is "four hundred twenty-one million, three hundred fifty-four thousand, four hundred thirty-seven".