142989950 has 12 divisors (see below), whose sum is σ = 265961400. Its totient is φ = 57195960.

The previous prime is 142989937. The next prime is 142989971. The reversal of 142989950 is 59989241.

It is a super-2 number, since 2×142989950² = 40892251602005000, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 142989895 and 142989904.

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, 1429850 + ... + 1429949.

It is an arithmetic number, because the mean of its divisors is an integer number (22163450).

Almost surely, 2^142989950 is an apocalyptic number.

142989950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142989950 is a deficient number, since it is larger than the sum of its proper divisors (122971450).

142989950 is a wasteful number, since it uses less digits than its factorization.

142989950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2859811 (or 2859806 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 47.

The square root of 142989950 is about 11957.8405241080. The cubic root of 142989950 is about 522.9199023801.

The spelling of 142989950 in words is "one hundred forty-two million, nine hundred eighty-nine thousand, nine hundred fifty".