172948042 has 4 divisors (see below), whose sum is σ = 259422066. Its totient is φ = 86474020.

The previous prime is 172948031. The next prime is 172948043. The reversal of 172948042 is 240849271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240849271 = 13 ⋅18526867.

It can be written as a sum of positive squares in only one way, i.e., 172633321 + 314721 = 13139^2 + 561^2 .

It is a super-2 number, since 2×172948042² = 59822050463267528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 172947992 and 172948010.

It is not an unprimeable number, because it can be changed into a prime (172948043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43237009 + ... + 43237012.

Almost surely, 2^172948042 is an apocalyptic number.

172948042 is a deficient number, since it is larger than the sum of its proper divisors (86474024).

172948042 is an equidigital number, since it uses as much as digits as its factorization.

172948042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86474023.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 172948042 is about 13150.9711428472. The cubic root of 172948042 is about 557.1496771527.

The spelling of 172948042 in words is "one hundred seventy-two million, nine hundred forty-eight thousand, forty-two".