1121020542 has 24 divisors (see below), whose sum is σ = 2432692080. Its totient is φ = 373086720.

The previous prime is 1121020519. The next prime is 1121020573. The reversal of 1121020542 is 2450201211.

1121020542 is a `hidden beast` number, since 1 + 121 + 0 + 2 + 0 + 542 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37042 + ... + 60117.

It is an arithmetic number, because the mean of its divisors is an integer number (101362170).

Almost surely, 2^1121020542 is an apocalyptic number.

1121020542 is an abundant number, since it is smaller than the sum of its proper divisors (1311671538).

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

1121020542 is a wasteful number, since it uses less digits than its factorization.

1121020542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97808 (or 97805 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1121020542 is about 33481.6448520678. The cubic root of 1121020542 is about 1038.8141507037.

Adding to 1121020542 its reverse (2450201211), we get a palindrome (3571221753).

The spelling of 1121020542 in words is "one billion, one hundred twenty-one million, twenty thousand, five hundred forty-two".