142423513 has 2 divisors, whose sum is σ = 142423514. Its totient is φ = 142423512.

The previous prime is 142423499. The next prime is 142423537. The reversal of 142423513 is 315324241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84860944 + 57562569 = 9212^2 + 7587^2 .

It is a cyclic number.

It is not a de Polignac number, because 142423513 - 2⁵ = 142423481 is a prime.

It is a super-2 number, since 2×142423513² = 40568914110522338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142423013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71211756 + 71211757.

It is an arithmetic number, because the mean of its divisors is an integer number (71211757).

Almost surely, 2^142423513 is an apocalyptic number.

It is an amenable number.

142423513 is a deficient number, since it is larger than the sum of its proper divisors (1).

142423513 is an equidigital number, since it uses as much as digits as its factorization.

142423513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 25.

The square root of 142423513 is about 11934.1322684140. The cubic root of 142423513 is about 522.2284944286.

Adding to 142423513 its reverse (315324241), we get a palindrome (457747754).

The spelling of 142423513 in words is "one hundred forty-two million, four hundred twenty-three thousand, five hundred thirteen".