142417747 has 2 divisors, whose sum is σ = 142417748. Its totient is φ = 142417746.

The previous prime is 142417739. The next prime is 142417783. The reversal of 142417747 is 747714241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142417747 - 2³ = 142417739 is a prime.

It is not a weakly prime, because it can be changed into another prime (142417727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71208873 + 71208874.

It is an arithmetic number, because the mean of its divisors is an integer number (71208874).

Almost surely, 2^142417747 is an apocalyptic number.

142417747 is a deficient number, since it is larger than the sum of its proper divisors (1).

142417747 is an equidigital number, since it uses as much as digits as its factorization.

142417747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43904, while the sum is 37.

The square root of 142417747 is about 11933.8906899636. The cubic root of 142417747 is about 522.2214468795.

The spelling of 142417747 in words is "one hundred forty-two million, four hundred seventeen thousand, seven hundred forty-seven".