172042210 has 32 divisors (see below), whose sum is σ = 339208560. Its totient is φ = 62533632.

The previous prime is 172042153. The next prime is 172042217. The reversal of 172042210 is 12240271.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 51108201 + 120934009 = 7149^2 + 10997^2 .

It is not an unprimeable number, because it can be changed into a prime (172042217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12519 + ... + 22378.

Almost surely, 2^172042210 is an apocalyptic number.

172042210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172042210 is a deficient number, since it is larger than the sum of its proper divisors (167166350).

172042210 is a wasteful number, since it uses less digits than its factorization.

172042210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34950.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 172042210 is about 13116.4861910498. The cubic root of 172042210 is about 556.1752656403.

Adding to 172042210 its reverse (12240271), we get a palindrome (184282481).

The spelling of 172042210 in words is "one hundred seventy-two million, forty-two thousand, two hundred ten".