142649236 has 12 divisors (see below), whose sum is σ = 249725812. Its totient is φ = 71299008.

The previous prime is 142649233. The next prime is 142649239. The reversal of 142649236 is 632946241.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (142649233) and next prime (142649239).

It can be written as a sum of positive squares in 2 ways, for example, as 107246736 + 35402500 = 10356^2 + 5950^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 142649195 and 142649204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142649233) 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, 12016 + ... + 20728.

Almost surely, 2^142649236 is an apocalyptic number.

It is an amenable number.

142649236 is a deficient number, since it is larger than the sum of its proper divisors (107076576).

142649236 is a wasteful number, since it uses less digits than its factorization.

142649236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12810 (or 12808 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 142649236 is about 11943.5855587843. The cubic root of 142649236 is about 522.5042372007.

The spelling of 142649236 in words is "one hundred forty-two million, six hundred forty-nine thousand, two hundred thirty-six".