142401901969 has 2 divisors, whose sum is σ = 142401901970. Its totient is φ = 142401901968.

The previous prime is 142401901951. The next prime is 142401901991. The reversal of 142401901969 is 969109104241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96214734225 + 46187167744 = 310185^2 + 214912^2 .

It is a cyclic number.

It is not a de Polignac number, because 142401901969 - 2⁵ = 142401901937 is a prime.

It is a super-2 number, since 2×142401901969² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142401901669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71200950984 + 71200950985.

It is an arithmetic number, because the mean of its divisors is an integer number (71200950985).

Almost surely, 2^142401901969 is an apocalyptic number.

It is an amenable number.

142401901969 is a deficient number, since it is larger than the sum of its proper divisors (1).

142401901969 is an equidigital number, since it uses as much as digits as its factorization.

142401901969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 142401901969 in words is "one hundred forty-two billion, four hundred one million, nine hundred one thousand, nine hundred sixty-nine".