142651764 has 18 divisors (see below), whose sum is σ = 360592050. Its totient is φ = 47550576.

The previous prime is 142651741. The next prime is 142651771. The reversal of 142651764 is 467156241.

It can be written as a sum of positive squares in only one way, i.e., 141419664 + 1232100 = 11892^2 + 1110^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3962549 = 142651764 / (1 + 4 + 2 + 6 + 5 + 1 + 7 + 6 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1981239 + ... + 1981310.

Almost surely, 2^142651764 is an apocalyptic number.

It is an amenable number.

142651764 is an abundant number, since it is smaller than the sum of its proper divisors (217940286).

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

142651764 is a wasteful number, since it uses less digits than its factorization.

142651764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3962559 (or 3962554 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 142651764 is about 11943.6913891812. The cubic root of 142651764 is about 522.5073237529.

The spelling of 142651764 in words is "one hundred forty-two million, six hundred fifty-one thousand, seven hundred sixty-four".