142444250 has 64 divisors (see below), whose sum is σ = 294446880. Its totient is φ = 51264000.

The previous prime is 142444249. The next prime is 142444277. The reversal of 142444250 is 52444241.

It can be written as a sum of positive squares in 16 ways, for example, as 60016009 + 82428241 = 7747^2 + 9079^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132716 + ... + 133784.

Almost surely, 2^142444250 is an apocalyptic number.

142444250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142444250 is an abundant number, since it is smaller than the sum of its proper divisors (152002630).

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

142444250 is a wasteful number, since it uses less digits than its factorization.

142444250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140 (or 1130 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 142444250 is about 11935.0010473397. The cubic root of 142444250 is about 522.2538388551.

Adding to 142444250 its reverse (52444241), we get a palindrome (194888491).

Subtracting from 142444250 its reverse (52444241), we obtain a palindrome (90000009).

The spelling of 142444250 in words is "one hundred forty-two million, four hundred forty-four thousand, two hundred fifty".