142441731 has 12 divisors (see below), whose sum is σ = 206402352. Its totient is φ = 94659696.

The previous prime is 142441723. The next prime is 142441769. The reversal of 142441731 is 137144241.

It is not a de Polignac number, because 142441731 - 2³ = 142441723 is a prime.

It is a super-2 number, since 2×142441731² = 40579293460552722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142441695 and 142441704.

It is not an unprimeable number, because it can be changed into a prime (142441711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22111 + ... + 27816.

It is an arithmetic number, because the mean of its divisors is an integer number (17200196).

Almost surely, 2^142441731 is an apocalyptic number.

142441731 is a deficient number, since it is larger than the sum of its proper divisors (63960621).

142441731 is a wasteful number, since it uses less digits than its factorization.

142441731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50250 (or 50247 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 142441731 is about 11934.8955169285. The cubic root of 142441731 is about 522.2507603052.

Adding to 142441731 its reverse (137144241), we get a palindrome (279585972).

The spelling of 142441731 in words is "one hundred forty-two million, four hundred forty-one thousand, seven hundred thirty-one".