142240940469 has 12 divisors (see below), whose sum is σ = 205462419916. Its totient is φ = 94825778112.

The previous prime is 142240940447. The next prime is 142240940477. The reversal of 142240940469 is 964049042241.

142240940469 is a `hidden beast` number, since 14 + 224 + 0 + 9 + 404 + 6 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16818717969 + 125422222500 = 129687^2 + 354150^2 .

It is not a de Polignac number, because 142240940469 - 2⁷ = 142240940341 is a prime.

It is a super-2 number, since 2×142240940469² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142240940419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 958767 + ... + 1097139.

Almost surely, 2^142240940469 is an apocalyptic number.

It is an amenable number.

142240940469 is a deficient number, since it is larger than the sum of its proper divisors (63221479447).

142240940469 is a wasteful number, since it uses less digits than its factorization.

142240940469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252596 (or 252593 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 142240940469 in words is "one hundred forty-two billion, two hundred forty million, nine hundred forty thousand, four hundred sixty-nine".