142176431 has 2 divisors, whose sum is σ = 142176432. Its totient is φ = 142176430.

The previous prime is 142176407. The next prime is 142176451. The reversal of 142176431 is 134671241.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (134671241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142176431 - 2²² = 137982127 is a prime.

It is a super-2 number, since 2×142176431² = 40428275063795522, 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 = 142176394 and 142176403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142176401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71088215 + 71088216.

It is an arithmetic number, because the mean of its divisors is an integer number (71088216).

Almost surely, 2^142176431 is an apocalyptic number.

142176431 is a deficient number, since it is larger than the sum of its proper divisors (1).

142176431 is an equidigital number, since it uses as much as digits as its factorization.

142176431 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 142176431 is about 11923.7758700841. The cubic root of 142176431 is about 521.9263253380.

The spelling of 142176431 in words is "one hundred forty-two million, one hundred seventy-six thousand, four hundred thirty-one".