142381508 has 6 divisors (see below), whose sum is σ = 249167646. Its totient is φ = 71190752.

The previous prime is 142381493. The next prime is 142381517. The reversal of 142381508 is 805183241.

It can be written as a sum of positive squares in only one way, i.e., 94051204 + 48330304 = 9698^2 + 6952^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17797685 + ... + 17797692.

It is an arithmetic number, because the mean of its divisors is an integer number (41527941).

Almost surely, 2^142381508 is an apocalyptic number.

It is an amenable number.

142381508 is a deficient number, since it is larger than the sum of its proper divisors (106786138).

142381508 is a wasteful number, since it uses less digits than its factorization.

142381508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35595381 (or 35595379 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 142381508 is about 11932.3722704247. The cubic root of 142381508 is about 522.1771490565.

The spelling of 142381508 in words is "one hundred forty-two million, three hundred eighty-one thousand, five hundred eight".