142057950 has 144 divisors (see below), whose sum is σ = 390577680. Its totient is φ = 34119680.

The previous prime is 142057943. The next prime is 142057957. The reversal of 142057950 is 59750241.

It is an interprime number because it is at equal distance from previous prime (142057943) and next prime (142057957).

It is a super-2 number, since 2×142057950² = 40360922316405000, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142057957) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1257094 + ... + 1257206.

It is an arithmetic number, because the mean of its divisors is an integer number (2712345).

Almost surely, 2^142057950 is an apocalyptic number.

142057950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 142057950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195288840).

142057950 is an abundant number, since it is smaller than the sum of its proper divisors (248519730).

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

142057950 is a wasteful number, since it uses less digits than its factorization.

142057950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 142057950 is about 11918.8065677735. The cubic root of 142057950 is about 521.7813047279.

It can be divided in two parts, 14205 and 7950, that added together give a triangular number (22155 = T₂₁₀).

The spelling of 142057950 in words is "one hundred forty-two million, fifty-seven thousand, nine hundred fifty".