142420400397 has 48 divisors (see below), whose sum is σ = 227596794048. Its totient is φ = 85094634240.

The previous prime is 142420400389. The next prime is 142420400417. The reversal of 142420400397 is 793004024241.

142420400397 is a `hidden beast` number, since 1 + 4 + 242 + 0 + 400 + 3 + 9 + 7 = 666.

It is not a de Polignac number, because 142420400397 - 2³ = 142420400389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142420400357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31485778 + ... + 31490300.

It is an arithmetic number, because the mean of its divisors is an integer number (4741599876).

Almost surely, 2^142420400397 is an apocalyptic number.

It is an amenable number.

142420400397 is a deficient number, since it is larger than the sum of its proper divisors (85176393651).

142420400397 is a wasteful number, since it uses less digits than its factorization.

142420400397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8970 (or 8967 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 142420400397 in words is "one hundred forty-two billion, four hundred twenty million, four hundred thousand, three hundred ninety-seven".