1121236542 has 48 divisors (see below), whose sum is σ = 2469933648. Its totient is φ = 367543680.

The previous prime is 1121236517. The next prime is 1121236549. The reversal of 1121236542 is 2456321211.

1121236542 is a `hidden beast` number, since 1 + 1 + 2 + 1 + 2 + 3 + 654 + 2 = 666.

1121236542 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1121236542² = 2514342766232235528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121236549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 346492 + ... + 349712.

It is an arithmetic number, because the mean of its divisors is an integer number (51456951).

Almost surely, 2^1121236542 is an apocalyptic number.

1121236542 is an abundant number, since it is smaller than the sum of its proper divisors (1348697106).

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

1121236542 is a wasteful number, since it uses less digits than its factorization.

1121236542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3545 (or 3542 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1121236542 is about 33484.8703446796. The cubic root of 1121236542 is about 1038.8808665333.

Adding to 1121236542 its reverse (2456321211), we get a palindrome (3577557753).

The spelling of 1121236542 in words is "one billion, one hundred twenty-one million, two hundred thirty-six thousand, five hundred forty-two".