1115901442 has 32 divisors (see below), whose sum is σ = 1776079872. Its totient is φ = 524772864.

The previous prime is 1115901421. The next prime is 1115901443. The reversal of 1115901442 is 2441095111.

It is a self number, because there is not a number n which added to its sum of digits gives 1115901442.

It is not an unprimeable number, because it can be changed into a prime (1115901443) 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, 711343 + ... + 712909.

It is an arithmetic number, because the mean of its divisors is an integer number (55502496).

Almost surely, 2^1115901442 is an apocalyptic number.

1115901442 is a deficient number, since it is larger than the sum of its proper divisors (660178430).

1115901442 is a wasteful number, since it uses less digits than its factorization.

1115901442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 1115901442 is about 33405.1110161305. Note that the first 3 decimals coincide. The cubic root of 1115901442 is about 1037.2305018702.

Adding to 1115901442 its reverse (2441095111), we get a palindrome (3556996553).

The spelling of 1115901442 in words is "one billion, one hundred fifteen million, nine hundred one thousand, four hundred forty-two".