1151020542 has 16 divisors (see below), whose sum is σ = 2630904192. Its totient is φ = 328863000.

The previous prime is 1151020523. The next prime is 1151020567. The reversal of 1151020542 is 2450201511.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13702584 + ... + 13702667.

It is an arithmetic number, because the mean of its divisors is an integer number (164431512).

Almost surely, 2^1151020542 is an apocalyptic number.

1151020542 is an abundant number, since it is smaller than the sum of its proper divisors (1479883650).

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

1151020542 is a wasteful number, since it uses less digits than its factorization.

1151020542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27405263.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1151020542 is about 33926.6936496912. The cubic root of 1151020542 is about 1047.9993778282. Note that the first 3 decimals are identical.

The spelling of 1151020542 in words is "one billion, one hundred fifty-one million, twenty thousand, five hundred forty-two".