2142749715 has 16 divisors (see below), whose sum is σ = 3455397888. Its totient is φ = 1133800416.

The previous prime is 2142749711. The next prime is 2142749753. The reversal of 2142749715 is 5179472412.

It is not a de Polignac number, because 2142749715 - 2² = 2142749711 is a prime.

It is a super-2 number, since 2×2142749715² = 9182752682265162450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2142749711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 560497 + ... + 564306.

It is an arithmetic number, because the mean of its divisors is an integer number (215962368).

Almost surely, 2^2142749715 is an apocalyptic number.

2142749715 is a deficient number, since it is larger than the sum of its proper divisors (1312648173).

2142749715 is a wasteful number, since it uses less digits than its factorization.

2142749715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124938.

The product of its digits is 141120, while the sum is 42.

The square root of 2142749715 is about 46289.8446206077. The cubic root of 2142749715 is about 1289.2104446735.

The spelling of 2142749715 in words is "two billion, one hundred forty-two million, seven hundred forty-nine thousand, seven hundred fifteen".