142400664442 has 8 divisors (see below), whose sum is σ = 217102652532. Its totient is φ = 70033113600.

The previous prime is 142400664421. The next prime is 142400664473. The reversal of 142400664442 is 244466004241.

It can be written as a sum of positive squares in 2 ways, for example, as 116273498121 + 26127166321 = 340989^2 + 161639^2 .

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

It is a super-3 number, since 3×142400664442³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 583609159 + ... + 583609402.

Almost surely, 2^142400664442 is an apocalyptic number.

142400664442 is a deficient number, since it is larger than the sum of its proper divisors (74701988090).

142400664442 is a wasteful number, since it uses less digits than its factorization.

142400664442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167218624.

The product of its (nonzero) digits is 147456, while the sum is 37.

Adding to 142400664442 its reverse (244466004241), we get a palindrome (386866668683).

The spelling of 142400664442 in words is "one hundred forty-two billion, four hundred million, six hundred sixty-four thousand, four hundred forty-two".