420022537 has 4 divisors (see below), whose sum is σ = 458206416. Its totient is φ = 381838660.

The previous prime is 420022511. The next prime is 420022591. The reversal of 420022537 is 735220024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420022537 - 2¹⁵ = 419989769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420020537) 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, 19091923 + ... + 19091944.

It is an arithmetic number, because the mean of its divisors is an integer number (114551604).

Almost surely, 2^420022537 is an apocalyptic number.

It is an amenable number.

420022537 is a deficient number, since it is larger than the sum of its proper divisors (38183879).

420022537 is a wasteful number, since it uses less digits than its factorization.

420022537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38183878.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 420022537 is about 20494.4513710419. The cubic root of 420022537 is about 748.9006334598.

The spelling of 420022537 in words is "four hundred twenty million, twenty-two thousand, five hundred thirty-seven".