142542132421 has 8 divisors (see below), whose sum is σ = 153567838424. Its totient is φ = 131525130240.

The previous prime is 142542132353. The next prime is 142542132433. The reversal of 142542132421 is 124231245241.

It can be written as a sum of positive squares in 4 ways, for example, as 1906632225 + 140635500196 = 43665^2 + 375014^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 142542132421 - 2¹⁵ = 142542099653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142542132461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2141916 + ... + 2207461.

It is an arithmetic number, because the mean of its divisors is an integer number (19195979803).

Almost surely, 2^142542132421 is an apocalyptic number.

It is an amenable number.

142542132421 is a deficient number, since it is larger than the sum of its proper divisors (11025706003).

142542132421 is a wasteful number, since it uses less digits than its factorization.

142542132421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4351911.

The product of its digits is 15360, while the sum is 31.

Adding to 142542132421 its reverse (124231245241), we get a palindrome (266773377662).

The spelling of 142542132421 in words is "one hundred forty-two billion, five hundred forty-two million, one hundred thirty-two thousand, four hundred twenty-one".