142147631 has 2 divisors, whose sum is σ = 142147632. Its totient is φ = 142147630.

The previous prime is 142147601. The next prime is 142147651. The reversal of 142147631 is 136741241.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142147631 - 2¹⁴ = 142131247 is a prime.

It is a super-2 number, since 2×142147631² = 40411897997824322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 142147594 and 142147603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142147601) 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 as a sum of consecutive naturals, namely, 71073815 + 71073816.

It is an arithmetic number, because the mean of its divisors is an integer number (71073816).

Almost surely, 2^142147631 is an apocalyptic number.

142147631 is a deficient number, since it is larger than the sum of its proper divisors (1).

142147631 is an equidigital number, since it uses as much as digits as its factorization.

142147631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 142147631 is about 11922.5681377797. The cubic root of 142147631 is about 521.8910815846.

Adding to 142147631 its reverse (136741241), we get a palindrome (278888872).

The spelling of 142147631 in words is "one hundred forty-two million, one hundred forty-seven thousand, six hundred thirty-one".