1153142542 has 4 divisors (see below), whose sum is σ = 1729713816. Its totient is φ = 576571270.

The previous prime is 1153142527. The next prime is 1153142569. The reversal of 1153142542 is 2452413511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2452413511 = 79 ⋅31043209.

It is a self number, because there is not a number n which added to its sum of digits gives 1153142542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288285634 + ... + 288285637.

It is an arithmetic number, because the mean of its divisors is an integer number (432428454).

Almost surely, 2^1153142542 is an apocalyptic number.

1153142542 is a deficient number, since it is larger than the sum of its proper divisors (576571274).

1153142542 is an equidigital number, since it uses as much as digits as its factorization.

1153142542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576571273.

The product of its digits is 4800, while the sum is 28.

The square root of 1153142542 is about 33957.9525590104. The cubic root of 1153142542 is about 1048.6430064974.

The spelling of 1153142542 in words is "one billion, one hundred fifty-three million, one hundred forty-two thousand, five hundred forty-two".