170421120 has 96 divisors (see below), whose sum is σ = 588505320. Its totient is φ = 45444096.

The previous prime is 170421103. The next prime is 170421137. The reversal of 170421120 is 21124071.

170421120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (170421103) and next prime (170421137).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 170421093 and 170421102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9034 + ... + 20553.

Almost surely, 2^170421120 is an apocalyptic number.

170421120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

170421120 is an abundant number, since it is smaller than the sum of its proper divisors (418084200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

170421120 is a wasteful number, since it uses less digits than its factorization.

170421120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29612 (or 29597 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 170421120 is about 13054.5440364649. The cubic root of 170421120 is about 554.4228721909.

Adding to 170421120 its reverse (21124071), we get a palindrome (191545191).

The spelling of 170421120 in words is "one hundred seventy million, four hundred twenty-one thousand, one hundred twenty".