142456747 has 2 divisors, whose sum is σ = 142456748. Its totient is φ = 142456746.

The previous prime is 142456723. The next prime is 142456757. The reversal of 142456747 is 747654241.

It is a strong prime.

It is an emirp because it is prime and its reverse (747654241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142456747 - 2²⁷ = 8239019 is a prime.

It is not a weakly prime, because it can be changed into another prime (142456757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71228373 + 71228374.

It is an arithmetic number, because the mean of its divisors is an integer number (71228374).

Almost surely, 2^142456747 is an apocalyptic number.

142456747 is a deficient number, since it is larger than the sum of its proper divisors (1).

142456747 is an equidigital number, since it uses as much as digits as its factorization.

142456747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 40.

The square root of 142456747 is about 11935.5245800090. The cubic root of 142456747 is about 522.2691112988.

The spelling of 142456747 in words is "one hundred forty-two million, four hundred fifty-six thousand, seven hundred forty-seven".