421425537 has 8 divisors (see below), whose sum is σ = 605123904. Its totient is φ = 259338768.

The previous prime is 421425533. The next prime is 421425551. The reversal of 421425537 is 735524124.

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

It is not a de Polignac number, because 421425537 - 2² = 421425533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421425498 and 421425507.

It is not an unprimeable number, because it can be changed into a prime (421425533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5402853 + ... + 5402930.

It is an arithmetic number, because the mean of its divisors is an integer number (75640488).

Almost surely, 2^421425537 is an apocalyptic number.

It is an amenable number.

421425537 is a deficient number, since it is larger than the sum of its proper divisors (183698367).

421425537 is a wasteful number, since it uses less digits than its factorization.

421425537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10805799.

The product of its digits is 33600, while the sum is 33.

The square root of 421425537 is about 20528.6516118327. The cubic root of 421425537 is about 749.7335569109.

The spelling of 421425537 in words is "four hundred twenty-one million, four hundred twenty-five thousand, five hundred thirty-seven".