142420400431 has 8 divisors (see below), whose sum is σ = 149928404720. Its totient is φ = 134913615552.

The previous prime is 142420400417. The next prime is 142420400453. The reversal of 142420400431 is 134004024241.

142420400431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142420400431 - 2⁷ = 142420400303 is a prime.

It is a super-2 number, since 2×142420400431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142420400396 and 142420400405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142420400461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60060 + ... + 537073.

It is an arithmetic number, because the mean of its divisors is an integer number (18741050590).

Almost surely, 2^142420400431 is an apocalyptic number.

142420400431 is a deficient number, since it is larger than the sum of its proper divisors (7508004289).

142420400431 is a wasteful number, since it uses less digits than its factorization.

142420400431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609705.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 142420400431 its reverse (134004024241), we get a palindrome (276424424672).

The spelling of 142420400431 in words is "one hundred forty-two billion, four hundred twenty million, four hundred thousand, four hundred thirty-one".