161742153 has 8 divisors (see below), whose sum is σ = 216393408. Its totient is φ = 107459504.

The previous prime is 161742137. The next prime is 161742173. The reversal of 161742153 is 351247161.

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

It is a cyclic number.

It is not a de Polignac number, because 161742153 - 2⁴ = 161742137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161742153.

It is not an unprimeable number, because it can be changed into a prime (161742173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91125 + ... + 92882.

It is an arithmetic number, because the mean of its divisors is an integer number (27049176).

Almost surely, 2^161742153 is an apocalyptic number.

It is an amenable number.

161742153 is a deficient number, since it is larger than the sum of its proper divisors (54651255).

161742153 is a wasteful number, since it uses less digits than its factorization.

161742153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184303.

The product of its digits is 5040, while the sum is 30.

The square root of 161742153 is about 12717.7888408324. The cubic root of 161742153 is about 544.8468026048.

The spelling of 161742153 in words is "one hundred sixty-one million, seven hundred forty-two thousand, one hundred fifty-three".