7541221542 has 32 divisors (see below), whose sum is σ = 15256605312. Its totient is φ = 2484816384.

The previous prime is 7541221537. The next prime is 7541221549. The reversal of 7541221542 is 2451221457.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7541221549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287238 + ... + 312390.

It is an arithmetic number, because the mean of its divisors is an integer number (476768916).

Almost surely, 2^7541221542 is an apocalyptic number.

7541221542 is an abundant number, since it is smaller than the sum of its proper divisors (7715383770).

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

7541221542 is a wasteful number, since it uses less digits than its factorization.

7541221542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25732.

The product of its digits is 22400, while the sum is 33.

The square root of 7541221542 is about 86840.2069435581. The cubic root of 7541221542 is about 1961.0134234035.

Adding to 7541221542 its reverse (2451221457), we get a palindrome (9992442999).

The spelling of 7541221542 in words is "seven billion, five hundred forty-one million, two hundred twenty-one thousand, five hundred forty-two".