1111157427 has 8 divisors (see below), whose sum is σ = 1481711616. Its totient is φ = 740687432.

The previous prime is 1111157423. The next prime is 1111157429. The reversal of 1111157427 is 7247511111.

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

It is a cyclic number.

It is not a de Polignac number, because 1111157427 - 2² = 1111157423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111157394 and 1111157403.

It is not an unprimeable number, because it can be changed into a prime (1111157423) 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, 22798 + ... + 52364.

It is an arithmetic number, because the mean of its divisors is an integer number (185213952).

Almost surely, 2^1111157427 is an apocalyptic number.

1111157427 is a deficient number, since it is larger than the sum of its proper divisors (370554189).

1111157427 is a wasteful number, since it uses less digits than its factorization.

1111157427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42097.

The product of its digits is 1960, while the sum is 30.

The square root of 1111157427 is about 33334.0280644269. The cubic root of 1111157427 is about 1035.7585598749.

Adding to 1111157427 its reverse (7247511111), we get a palindrome (8358668538).

The spelling of 1111157427 in words is "one billion, one hundred eleven million, one hundred fifty-seven thousand, four hundred twenty-seven".