112172421 has 8 divisors (see below), whose sum is σ = 149670144. Its totient is φ = 74728160.

The previous prime is 112172407. The next prime is 112172461. The reversal of 112172421 is 124271211.

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 112172421 - 2⁷ = 112172293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112172461) 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, 8181 + ... + 17066.

It is an arithmetic number, because the mean of its divisors is an integer number (18708768).

Almost surely, 2^112172421 is an apocalyptic number.

It is an amenable number.

112172421 is a deficient number, since it is larger than the sum of its proper divisors (37497723).

112172421 is a wasteful number, since it uses less digits than its factorization.

112172421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26731.

The product of its digits is 224, while the sum is 21.

The square root of 112172421 is about 10591.1482380335. The cubic root of 112172421 is about 482.2756826411.

The spelling of 112172421 in words is "one hundred twelve million, one hundred seventy-two thousand, four hundred twenty-one".