161427247 has 8 divisors (see below), whose sum is σ = 162538880. Its totient is φ = 160319520.

The previous prime is 161427197. The next prime is 161427283. The reversal of 161427247 is 742724161.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161427247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161427647) 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, 157597 + ... + 158617.

It is an arithmetic number, because the mean of its divisors is an integer number (20317360).

Almost surely, 2^161427247 is an apocalyptic number.

161427247 is a deficient number, since it is larger than the sum of its proper divisors (1111633).

161427247 is a wasteful number, since it uses less digits than its factorization.

161427247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953.

The product of its digits is 18816, while the sum is 34.

The square root of 161427247 is about 12705.4022761973. The cubic root of 161427247 is about 544.4929740057.

The spelling of 161427247 in words is "one hundred sixty-one million, four hundred twenty-seven thousand, two hundred forty-seven".