142228031 has 16 divisors (see below), whose sum is σ = 160659456. Its totient is φ = 124740000.

The previous prime is 142228003. The next prime is 142228043. The reversal of 142228031 is 130822241.

It is a happy number.

It is not a de Polignac number, because 142228031 - 2²⁶ = 75119167 is a prime.

It is a super-2 number, since 2×142228031² = 40457625604273922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142227988 and 142228006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142228061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214841 + ... + 215501.

It is an arithmetic number, because the mean of its divisors is an integer number (10041216).

Almost surely, 2^142228031 is an apocalyptic number.

142228031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

142228031 is a deficient number, since it is larger than the sum of its proper divisors (18431425).

142228031 is a wasteful number, since it uses less digits than its factorization.

142228031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 142228031 is about 11925.9394179243. The cubic root of 142228031 is about 521.9894584954.

The spelling of 142228031 in words is "one hundred forty-two million, two hundred twenty-eight thousand, thirty-one".