142815850 has 24 divisors (see below), whose sum is σ = 266818860. Its totient is φ = 56872320.

The previous prime is 142815821. The next prime is 142815851. The reversal of 142815850 is 58518241.

It can be written as a sum of positive squares in 6 ways, for example, as 101868649 + 40947201 = 10093^2 + 6399^2 .

It is a super-2 number, since 2×142815850² = 40792734022445000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142815851) 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 11 ways as a sum of consecutive naturals, for example, 5214 + ... + 17686.

Almost surely, 2^142815850 is an apocalyptic number.

142815850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142815850 is a deficient number, since it is larger than the sum of its proper divisors (124003010).

142815850 is a wasteful number, since it uses less digits than its factorization.

142815850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12714 (or 12709 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 142815850 is about 11950.5585643517. The cubic root of 142815850 is about 522.7075859917.

The spelling of 142815850 in words is "one hundred forty-two million, eight hundred fifteen thousand, eight hundred fifty".