240651007012542 has 128 divisors (see below), whose sum is σ = 572688757555200. Its totient is φ = 65967912691200.

The previous prime is 240651007012519. The next prime is 240651007012571. The reversal of 240651007012542 is 245210700156042.

It is a self number, because there is not a number n which added to its sum of digits gives 240651007012542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 176534934 + ... + 177892902.

It is an arithmetic number, because the mean of its divisors is an integer number (4474130918400).

Almost surely, 2^{240651007012542} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 240651007012542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286344378777600).

240651007012542 is an abundant number, since it is smaller than the sum of its proper divisors (332037750542658).

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

240651007012542 is a wasteful number, since it uses less digits than its factorization.

240651007012542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359182.

The product of its (nonzero) digits is 134400, while the sum is 39.

Adding to 240651007012542 its reverse (245210700156042), we get a palindrome (485861707168584).

The spelling of 240651007012542 in words is "two hundred forty trillion, six hundred fifty-one billion, seven million, twelve thousand, five hundred forty-two".