142247402649 has 45 divisors (see below), whose sum is σ = 226231653765. Its totient is φ = 86127572520.

The previous prime is 142247402639. The next prime is 142247402653. The reversal of 142247402649 is 946204742241.

The square root of 142247402649 is 377157.

It is a perfect power (a square), and thus also a powerful number.

142247402649 is a `hidden beast` number, since 14 + 224 + 7 + 402 + 6 + 4 + 9 = 666.

It is not a de Polignac number, because 142247402649 - 2³³ = 133657468057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142247402639) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 136907472 + ... + 136908510.

Almost surely, 2^142247402649 is an apocalyptic number.

142247402649 is the 377157-th square number.

142247402649 is the 188579-th centered octagonal number.

It is an amenable number.

142247402649 is a deficient number, since it is larger than the sum of its proper divisors (83984251116).

142247402649 is an frugal number, since it uses more digits than its factorization.

142247402649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128 (or 1053 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 142247402649 in words is "one hundred forty-two billion, two hundred forty-seven million, four hundred two thousand, six hundred forty-nine".