2921900742 has 32 divisors (see below), whose sum is σ = 6717016800. Its totient is φ = 940381344.

The previous prime is 2921900699. The next prime is 2921900743. The reversal of 2921900742 is 2470091292.

It is a super-2 number, since 2×2921900742² = 17075007892200301128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2921900697 and 2921900706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2921900743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 931353 + ... + 934484.

It is an arithmetic number, because the mean of its divisors is an integer number (209906775).

Almost surely, 2^2921900742 is an apocalyptic number.

2921900742 is an abundant number, since it is smaller than the sum of its proper divisors (3795116058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2921900742 is a wasteful number, since it uses less digits than its factorization.

2921900742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865877 (or 1865871 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 2921900742 is about 54054.6088876795. The cubic root of 2921900742 is about 1429.6239645681.

The spelling of 2921900742 in words is "two billion, nine hundred twenty-one million, nine hundred thousand, seven hundred forty-two".