1605455142 has 32 divisors (see below), whose sum is σ = 3227532000. Its totient is φ = 532389888.

The previous prime is 1605455101. The next prime is 1605455147. The reversal of 1605455142 is 2415545061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605455147) 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, 1609788 + ... + 1610784.

It is an arithmetic number, because the mean of its divisors is an integer number (100860375).

Almost surely, 2^1605455142 is an apocalyptic number.

1605455142 is an abundant number, since it is smaller than the sum of its proper divisors (1622076858).

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

1605455142 is a wasteful number, since it uses less digits than its factorization.

1605455142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120.

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 1605455142 is about 40068.1312516568. The cubic root of 1605455142 is about 1170.9348318010.

The spelling of 1605455142 in words is "one billion, six hundred five million, four hundred fifty-five thousand, one hundred forty-two".