1151021542 has 32 divisors (see below), whose sum is σ = 1977592320. Its totient is φ = 497592480.

The previous prime is 1151021527. The next prime is 1151021561. The reversal of 1151021542 is 2451201511.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29283 + ... + 56209.

It is an arithmetic number, because the mean of its divisors is an integer number (61799760).

Almost surely, 2^1151021542 is an apocalyptic number.

1151021542 is a deficient number, since it is larger than the sum of its proper divisors (826570778).

1151021542 is a wasteful number, since it uses less digits than its factorization.

1151021542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27036.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 1151021542 is about 33926.7083873458. The cubic root of 1151021542 is about 1047.9996813267. Note that the first 3 decimals are identical.

The spelling of 1151021542 in words is "one billion, one hundred fifty-one million, twenty-one thousand, five hundred forty-two".