612020421 has 8 divisors (see below), whose sum is σ = 906696960. Its totient is φ = 408013596.

The previous prime is 612020399. The next prime is 612020449. The reversal of 612020421 is 124020216.

It is not a de Polignac number, because 612020421 - 2⁵ = 612020389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 612020394 and 612020403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612020021) 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, 11333685 + ... + 11333738.

It is an arithmetic number, because the mean of its divisors is an integer number (113337120).

Almost surely, 2^612020421 is an apocalyptic number.

It is an amenable number.

612020421 is a deficient number, since it is larger than the sum of its proper divisors (294676539).

612020421 is a wasteful number, since it uses less digits than its factorization.

612020421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22667432 (or 22667426 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 612020421 is about 24739.0464852629. The cubic root of 612020421 is about 849.0279180221.

Adding to 612020421 its reverse (124020216), we get a palindrome (736040637).

The spelling of 612020421 in words is "six hundred twelve million, twenty thousand, four hundred twenty-one".