1009161242 has 16 divisors (see below), whose sum is σ = 1604943720. Its totient is φ = 474259968.

The previous prime is 1009161239. The next prime is 1009161253. The reversal of 1009161242 is 2421619001.

It can be written as a sum of positive squares in 4 ways, for example, as 997864921 + 11296321 = 31589^2 + 3361^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6134 + ... + 45342.

Almost surely, 2^1009161242 is an apocalyptic number.

1009161242 is a deficient number, since it is larger than the sum of its proper divisors (595782478).

1009161242 is a wasteful number, since it uses less digits than its factorization.

1009161242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39985.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1009161242 is about 31767.2983113138. The cubic root of 1009161242 is about 1003.0444691348.

The spelling of 1009161242 in words is "one billion, nine million, one hundred sixty-one thousand, two hundred forty-two".