2420128888731 has 6 divisors (see below), whose sum is σ = 3495741728180. Its totient is φ = 1613419259148.

The previous prime is 2420128888669. The next prime is 2420128888759. The reversal of 2420128888731 is 1378888210242.

It is not a de Polignac number, because 2420128888731 - 2²⁶ = 2420061779867 is a prime.

It is a super-2 number, since 2×2420128888731² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2420128888031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 134451604921 + ... + 134451604938.

Almost surely, 2^{2420128888731} is an apocalyptic number.

2420128888731 is a deficient number, since it is larger than the sum of its proper divisors (1075612839449).

2420128888731 is a wasteful number, since it uses less digits than its factorization.

2420128888731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268903209865 (or 268903209862 counting only the distinct ones).

The product of its (nonzero) digits is 2752512, while the sum is 54.

The spelling of 2420128888731 in words is "two trillion, four hundred twenty billion, one hundred twenty-eight million, eight hundred eighty-eight thousand, seven hundred thirty-one".