1129404642 has 32 divisors (see below), whose sum is σ = 2317075200. Its totient is φ = 366828288.

The previous prime is 1129404629. The next prime is 1129404643. The reversal of 1129404642 is 2464049211.

It is a super-2 number, since 2×1129404642² = 2551109690742296328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1129404643) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 55834 + ... + 73322.

It is an arithmetic number, because the mean of its divisors is an integer number (72408600).

Almost surely, 2^1129404642 is an apocalyptic number.

1129404642 is an abundant number, since it is smaller than the sum of its proper divisors (1187670558).

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

1129404642 is a wasteful number, since it uses less digits than its factorization.

1129404642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17770.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 1129404642 is about 33606.6160450587. The cubic root of 1129404642 is about 1041.3974809103.

The spelling of 1129404642 in words is "one billion, one hundred twenty-nine million, four hundred four thousand, six hundred forty-two".