142581915442 has 8 divisors (see below), whose sum is σ = 214017288732. Its totient is φ = 71242819200.

The previous prime is 142581915419. The next prime is 142581915451. The reversal of 142581915442 is 244519185241.

It can be written as a sum of positive squares in 2 ways, for example, as 142356044601 + 225870841 = 377301^2 + 15029^2 .

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

It is a super-2 number, since 2×142581915442² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142581915392 and 142581915401.

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, 24065559 + ... + 24071482.

Almost surely, 2^142581915442 is an apocalyptic number.

142581915442 is a deficient number, since it is larger than the sum of its proper divisors (71435373290).

142581915442 is a wasteful number, since it uses less digits than its factorization.

142581915442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48138524.

The product of its digits is 460800, while the sum is 46.

The spelling of 142581915442 in words is "one hundred forty-two billion, five hundred eighty-one million, nine hundred fifteen thousand, four hundred forty-two".