420761417021 has 8 divisors (see below), whose sum is σ = 459111201888. Its totient is φ = 382428090000.

The previous prime is 420761417009. The next prime is 420761417039. The reversal of 420761417021 is 120714167024.

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

It is a de Polignac number, because none of the positive numbers 2^k-420761417021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420761413021) 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, 4060970 + ... + 4163291.

It is an arithmetic number, because the mean of its divisors is an integer number (57388900236).

Almost surely, 2^420761417021 is an apocalyptic number.

It is an amenable number.

420761417021 is a deficient number, since it is larger than the sum of its proper divisors (38349784867).

420761417021 is a wasteful number, since it uses less digits than its factorization.

420761417021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8228923.

The product of its (nonzero) digits is 18816, while the sum is 35.

The spelling of 420761417021 in words is "four hundred twenty billion, seven hundred sixty-one million, four hundred seventeen thousand, twenty-one".