620126121 has 8 divisors (see below), whose sum is σ = 832783840. Its totient is φ = 410442912.

The previous prime is 620126113. The next prime is 620126137. The reversal of 620126121 is 121621026.

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

It is not a de Polignac number, because 620126121 - 2³ = 620126113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620126321) 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, 743140 + ... + 743973.

It is an arithmetic number, because the mean of its divisors is an integer number (104097980).

Almost surely, 2^620126121 is an apocalyptic number.

It is an amenable number.

620126121 is a deficient number, since it is larger than the sum of its proper divisors (212657719).

620126121 is a wasteful number, since it uses less digits than its factorization.

620126121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487255.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 620126121 is about 24902.3316378206. The cubic root of 620126121 is about 852.7597135565.

Adding to 620126121 its reverse (121621026), we get a palindrome (741747147).

The spelling of 620126121 in words is "six hundred twenty million, one hundred twenty-six thousand, one hundred twenty-one".