142145031 has 16 divisors (see below), whose sum is σ = 221024000. Its totient is φ = 81225144.

The previous prime is 142145027. The next prime is 142145033. The reversal of 142145031 is 130541241.

142145031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142145031 - 2² = 142145027 is a prime.

It is a super-2 number, since 2×142145031² = 40410419675981922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142144989 and 142145007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142145033) 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, 68041 + ... + 70098.

It is an arithmetic number, because the mean of its divisors is an integer number (13814000).

Almost surely, 2^142145031 is an apocalyptic number.

142145031 is a deficient number, since it is larger than the sum of its proper divisors (78878969).

142145031 is an equidigital number, since it uses as much as digits as its factorization.

142145031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138163 (or 138149 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 142145031 is about 11922.4591003702. The cubic root of 142145031 is about 521.8878996226.

Adding to 142145031 its reverse (130541241), we get a palindrome (272686272).

The spelling of 142145031 in words is "one hundred forty-two million, one hundred forty-five thousand, thirty-one".