2142749716 has 12 divisors (see below), whose sum is σ = 3760558900. Its totient is φ = 1068304320.

The previous prime is 2142749711. The next prime is 2142749753. The reversal of 2142749716 is 6179472412.

It can be written as a sum of positive squares in 2 ways, for example, as 1904973316 + 237776400 = 43646^2 + 15420^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142749711) 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, 766065 + ... + 768856.

Almost surely, 2^2142749716 is an apocalyptic number.

It is an amenable number.

2142749716 is a deficient number, since it is larger than the sum of its proper divisors (1617809184).

2142749716 is a wasteful number, since it uses less digits than its factorization.

2142749716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535274 (or 1535272 counting only the distinct ones).

The product of its digits is 169344, while the sum is 43.

The square root of 2142749716 is about 46289.8446314092. The cubic root of 2142749716 is about 1289.2104448740.

The spelling of 2142749716 in words is "two billion, one hundred forty-two million, seven hundred forty-nine thousand, seven hundred sixteen".