42072996901 has 4 divisors (see below), whose sum is σ = 45309381292. Its totient is φ = 38836612512.

The previous prime is 42072996869. The next prime is 42072996923. The reversal of 42072996901 is 10969927024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2461648225 + 39611348676 = 49615^2 + 199026^2 .

It is a cyclic number.

It is not a de Polignac number, because 42072996901 - 2⁵ = 42072996869 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 (42472996901) 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, 1618192176 + ... + 1618192201.

It is an arithmetic number, because the mean of its divisors is an integer number (11327345323).

Almost surely, 2^42072996901 is an apocalyptic number.

It is an amenable number.

42072996901 is a deficient number, since it is larger than the sum of its proper divisors (3236384391).

42072996901 is a wasteful number, since it uses less digits than its factorization.

42072996901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236384390.

The product of its (nonzero) digits is 489888, while the sum is 49.

The spelling of 42072996901 in words is "forty-two billion, seventy-two million, nine hundred ninety-six thousand, nine hundred one".