142412731 has 2 divisors, whose sum is σ = 142412732. Its totient is φ = 142412730.

The previous prime is 142412719. The next prime is 142412759. The reversal of 142412731 is 137214241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142412731 is a prime.

It is a super-2 number, since 2×142412731² = 40562771901756722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142412696 and 142412705.

It is not a weakly prime, because it can be changed into another prime (142412131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71206365 + 71206366.

It is an arithmetic number, because the mean of its divisors is an integer number (71206366).

Almost surely, 2^142412731 is an apocalyptic number.

142412731 is a deficient number, since it is larger than the sum of its proper divisors (1).

142412731 is an equidigital number, since it uses as much as digits as its factorization.

142412731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 25.

The square root of 142412731 is about 11933.6805303310. The cubic root of 142412731 is about 522.2153158703.

Adding to 142412731 its reverse (137214241), we get a palindrome (279626972).

The spelling of 142412731 in words is "one hundred forty-two million, four hundred twelve thousand, seven hundred thirty-one".