142934731 has 2 divisors, whose sum is σ = 142934732. Its totient is φ = 142934730.

The previous prime is 142934713. The next prime is 142934761. The reversal of 142934731 is 137439241.

Together with previous prime (142934713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (137439241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142934731 - 2⁵ = 142934699 is a prime.

It is a super-2 number, since 2×142934731² = 40860674652084722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142934761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71467365 + 71467366.

It is an arithmetic number, because the mean of its divisors is an integer number (71467366).

Almost surely, 2^142934731 is an apocalyptic number.

142934731 is a deficient number, since it is larger than the sum of its proper divisors (1).

142934731 is an equidigital number, since it uses as much as digits as its factorization.

142934731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 142934731 is about 11955.5313976418. The cubic root of 142934731 is about 522.8525810245.

The spelling of 142934731 in words is "one hundred forty-two million, nine hundred thirty-four thousand, seven hundred thirty-one".