42023519977 has 2 divisors, whose sum is σ = 42023519978. Its totient is φ = 42023519976.

The previous prime is 42023519963. The next prime is 42023520031. The reversal of 42023519977 is 77991532024.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25438974016 + 16584545961 = 159496^2 + 128781^2 .

It is a cyclic number.

It is not a de Polignac number, because 42023519977 - 2¹⁹ = 42022995689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42023519977.

It is not a weakly prime, because it can be changed into another prime (42023519177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21011759988 + 21011759989.

It is an arithmetic number, because the mean of its divisors is an integer number (21011759989).

Almost surely, 2^42023519977 is an apocalyptic number.

It is an amenable number.

42023519977 is a deficient number, since it is larger than the sum of its proper divisors (1).

42023519977 is an equidigital number, since it uses as much as digits as its factorization.

42023519977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 952560, while the sum is 49.

The spelling of 42023519977 in words is "forty-two billion, twenty-three million, five hundred nineteen thousand, nine hundred seventy-seven".