142990944 has 96 divisors (see below), whose sum is σ = 407314656. Its totient is φ = 43745280.

The previous prime is 142990943. The next prime is 142990957. The reversal of 142990944 is 449099241.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×142990944² = 40892820132022272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142990896 and 142990905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142990943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65844 + ... + 67980.

It is an arithmetic number, because the mean of its divisors is an integer number (4242861).

Almost surely, 2^142990944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142990944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203657328).

142990944 is an abundant number, since it is smaller than the sum of its proper divisors (264323712).

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

142990944 is a wasteful number, since it uses less digits than its factorization.

142990944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208 (or 2200 counting only the distinct ones).

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

The square root of 142990944 is about 11957.8820867242. The cubic root of 142990944 is about 522.9211140764.

The spelling of 142990944 in words is "one hundred forty-two million, nine hundred ninety thousand, nine hundred forty-four".