145377272242 has 8 divisors (see below), whose sum is σ = 223959581676. Its totient is φ = 70724078352.

The previous prime is 145377272213. The next prime is 145377272251. The reversal of 145377272242 is 242272773541.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 110111812561 + 35265459681 = 331831^2 + 187791^2 .

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

It is a super-2 number, since 2×145377272242² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145377272192 and 145377272201.

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, 982278793 + ... + 982278940.

Almost surely, 2^145377272242 is an apocalyptic number.

145377272242 is a deficient number, since it is larger than the sum of its proper divisors (78582309434).

145377272242 is a wasteful number, since it uses less digits than its factorization.

145377272242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964557772.

The product of its digits is 1317120, while the sum is 46.

The spelling of 145377272242 in words is "one hundred forty-five billion, three hundred seventy-seven million, two hundred seventy-two thousand, two hundred forty-two".