1605011142 has 32 divisors (see below), whose sum is σ = 3718858752. Its totient is φ = 452291904.

The previous prime is 1605011117. The next prime is 1605011147. The reversal of 1605011142 is 2411105061.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605011147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258678 + ... + 264809.

It is an arithmetic number, because the mean of its divisors is an integer number (116214336).

Almost surely, 2^1605011142 is an apocalyptic number.

1605011142 is an abundant number, since it is smaller than the sum of its proper divisors (2113847610).

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

1605011142 is a wasteful number, since it uses less digits than its factorization.

1605011142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523572.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 1605011142 is about 40062.5903056705. The cubic root of 1605011142 is about 1170.8268784060.

The spelling of 1605011142 in words is "one billion, six hundred five million, eleven thousand, one hundred forty-two".