1011155042 has 8 divisors (see below), whose sum is σ = 1517132496. Its totient is φ = 505444212.

The previous prime is 1011155011. The next prime is 1011155059. The reversal of 1011155042 is 2405511101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56888 + ... + 72515.

It is an arithmetic number, because the mean of its divisors is an integer number (189641562).

Almost surely, 2^1011155042 is an apocalyptic number.

1011155042 is a deficient number, since it is larger than the sum of its proper divisors (505977454).

1011155042 is a wasteful number, since it uses less digits than its factorization.

1011155042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133312.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1011155042 is about 31798.6641543320. The cubic root of 1011155042 is about 1003.7046062782.

Adding to 1011155042 its reverse (2405511101), we get a palindrome (3416666143).

The spelling of 1011155042 in words is "one billion, eleven million, one hundred fifty-five thousand, forty-two".