420142657547 has 2 divisors, whose sum is σ = 420142657548. Its totient is φ = 420142657546.

The previous prime is 420142657477. The next prime is 420142657553. The reversal of 420142657547 is 745756241024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420142657547 - 2²⁸ = 419874222091 is a prime.

It is not a weakly prime, because it can be changed into another prime (420142657567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210071328773 + 210071328774.

It is an arithmetic number, because the mean of its divisors is an integer number (210071328774).

Almost surely, 2^420142657547 is an apocalyptic number.

420142657547 is a deficient number, since it is larger than the sum of its proper divisors (1).

420142657547 is an equidigital number, since it uses as much as digits as its factorization.

420142657547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1881600, while the sum is 47.

The spelling of 420142657547 in words is "four hundred twenty billion, one hundred forty-two million, six hundred fifty-seven thousand, five hundred forty-seven".