161240134 has 8 divisors (see below), whose sum is σ = 263847528. Its totient is φ = 73290960.

The previous prime is 161240129. The next prime is 161240147. The reversal of 161240134 is 431042161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 7329097 = 161240134 / (1 + 6 + 1 + 2 + 4 + 0 + 1 + 3 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3664527 + ... + 3664570.

It is an arithmetic number, because the mean of its divisors is an integer number (32980941).

Almost surely, 2^161240134 is an apocalyptic number.

161240134 is a deficient number, since it is larger than the sum of its proper divisors (102607394).

161240134 is a wasteful number, since it uses less digits than its factorization.

161240134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7329110.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 161240134 is about 12698.0366198873. The cubic root of 161240134 is about 544.2825157232.

Adding to 161240134 its reverse (431042161), we get a palindrome (592282295).

The spelling of 161240134 in words is "one hundred sixty-one million, two hundred forty thousand, one hundred thirty-four".