7547405137242 has 16 divisors (see below), whose sum is σ = 15379618016160. Its totient is φ = 2468333755472.

The previous prime is 7547405137201. The next prime is 7547405137249. The reversal of 7547405137242 is 2427315047457.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (7547405137249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11866988892 + ... + 11866989527.

It is an arithmetic number, because the mean of its divisors is an integer number (961226126010).

Almost surely, 2^{7547405137242} is an apocalyptic number.

7547405137242 is an abundant number, since it is smaller than the sum of its proper divisors (7832212878918).

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

7547405137242 is a wasteful number, since it uses less digits than its factorization.

7547405137242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23733978477.

The product of its (nonzero) digits is 6585600, while the sum is 51.

The spelling of 7547405137242 in words is "seven trillion, five hundred forty-seven billion, four hundred five million, one hundred thirty-seven thousand, two hundred forty-two".