161042458 has 24 divisors (see below), whose sum is σ = 260531424. Its totient is φ = 74515320.

The previous prime is 161042449. The next prime is 161042503. The reversal of 161042458 is 854240161.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42385 + ... + 46027.

It is an arithmetic number, because the mean of its divisors is an integer number (10855476).

Almost surely, 2^161042458 is an apocalyptic number.

161042458 is a deficient number, since it is larger than the sum of its proper divisors (99488966).

161042458 is a wasteful number, since it uses less digits than its factorization.

161042458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3730 (or 3699 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 161042458 is about 12690.2505097417. The cubic root of 161042458 is about 544.0599995998.

The spelling of 161042458 in words is "one hundred sixty-one million, forty-two thousand, four hundred fifty-eight".