11200120542 has 48 divisors (see below), whose sum is σ = 26141261328. Its totient is φ = 3445182720.

The previous prime is 11200120507. The next prime is 11200120559. The reversal of 11200120542 is 24502100211.

11200120542 is a `hidden beast` number, since 1 + 1 + 2 + 0 + 0 + 120 + 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 23 ways as a sum of consecutive naturals, for example, 1381942 + ... + 1390022.

It is an arithmetic number, because the mean of its divisors is an integer number (544609611).

Almost surely, 2^11200120542 is an apocalyptic number.

11200120542 is an abundant number, since it is smaller than the sum of its proper divisors (14941140786).

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

11200120542 is a wasteful number, since it uses less digits than its factorization.

11200120542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14025 (or 14022 counting only the distinct ones).

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

Adding to 11200120542 its reverse (24502100211), we get a palindrome (35702220753).

The spelling of 11200120542 in words is "eleven billion, two hundred million, one hundred twenty thousand, five hundred forty-two".