242525145142440 has 48 divisors (see below), whose sum is σ = 788206721714100. Its totient is φ = 64673372037888.

The previous prime is 242525145142429. The next prime is 242525145142487. The reversal of 242525145142440 is 44241541525242.

242525145142440 is a `hidden beast` number, since 2 + 4 + 2 + 5 + 2 + 514 + 51 + 42 + 4 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 242200183579524 + 324961562916 = 15562782^2 + 570054^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 336840479005 + ... + 336840479724.

Almost surely, 2^{242525145142440} is an apocalyptic number.

242525145142440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242525145142440 is an abundant number, since it is smaller than the sum of its proper divisors (545681576571660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242525145142440 is a wasteful number, since it uses less digits than its factorization.

242525145142440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673680958746 (or 673680958739 counting only the distinct ones).

The product of its (nonzero) digits is 2048000, while the sum is 45.

Adding to 242525145142440 its reverse (44241541525242), we get a palindrome (286766686667682).

The spelling of 242525145142440 in words is "two hundred forty-two trillion, five hundred twenty-five billion, one hundred forty-five million, one hundred forty-two thousand, four hundred forty".