2120157754 has 96 divisors (see below), whose sum is σ = 4021690176. Its totient is φ = 826183680.

The previous prime is 2120157749. The next prime is 2120157791. The reversal of 2120157754 is 4577510212.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9339789 + ... + 9340015.

It is an arithmetic number, because the mean of its divisors is an integer number (41892606).

Almost surely, 2^2120157754 is an apocalyptic number.

2120157754 is a deficient number, since it is larger than the sum of its proper divisors (1901532422).

2120157754 is a wasteful number, since it uses less digits than its factorization.

2120157754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 2120157754 is about 46045.1707999873. The cubic root of 2120157754 is about 1284.6635210389.

Adding to 2120157754 its reverse (4577510212), we get a palindrome (6697667966).

The spelling of 2120157754 in words is "two billion, one hundred twenty million, one hundred fifty-seven thousand, seven hundred fifty-four".