3811521242 has 8 divisors (see below), whose sum is σ = 5760925632. Its totient is φ = 1891212700.

The previous prime is 3811521221. The next prime is 3811521271. The reversal of 3811521242 is 2421251183.

It is a happy number.

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

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, 7273634 + ... + 7274157.

It is an arithmetic number, because the mean of its divisors is an integer number (720115704).

Almost surely, 2^3811521242 is an apocalyptic number.

3811521242 is a deficient number, since it is larger than the sum of its proper divisors (1949404390).

3811521242 is a wasteful number, since it uses less digits than its factorization.

3811521242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14547924.

The product of its digits is 3840, while the sum is 29.

The square root of 3811521242 is about 61737.5189167819. The cubic root of 3811521242 is about 1562.0662465079.

The spelling of 3811521242 in words is "three billion, eight hundred eleven million, five hundred twenty-one thousand, two hundred forty-two".