142690938 has 32 divisors (see below), whose sum is σ = 308083776. Its totient is φ = 43797888.

The previous prime is 142690937. The next prime is 142690939. The reversal of 142690938 is 839096241.

It is an interprime number because it is at equal distance from previous prime (142690937) and next prime (142690939).

It is a self number, because there is not a number n which added to its sum of digits gives 142690938.

It is not an unprimeable number, because it can be changed into a prime (142690937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33645 + ... + 37647.

It is an arithmetic number, because the mean of its divisors is an integer number (9627618).

Almost surely, 2^142690938 is an apocalyptic number.

142690938 is an abundant number, since it is smaller than the sum of its proper divisors (165392838).

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

142690938 is a wasteful number, since it uses less digits than its factorization.

142690938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4478.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 142690938 is about 11945.3312218624. The cubic root of 142690938 is about 522.5551484414. Note that the first 3 decimals are identical.

The spelling of 142690938 in words is "one hundred forty-two million, six hundred ninety thousand, nine hundred thirty-eight".