170390220542 has 4 divisors (see below), whose sum is σ = 255585330816. Its totient is φ = 85195110270.

The previous prime is 170390220521. The next prime is 170390220571. The reversal of 170390220542 is 245022093071.

It is a happy number.

170390220542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42597555134 + ... + 42597555137.

It is an arithmetic number, because the mean of its divisors is an integer number (63896332704).

Almost surely, 2^170390220542 is an apocalyptic number.

170390220542 is a deficient number, since it is larger than the sum of its proper divisors (85195110274).

170390220542 is an equidigital number, since it uses as much as digits as its factorization.

170390220542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85195110273.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 170390220542 in words is "one hundred seventy billion, three hundred ninety million, two hundred twenty thousand, five hundred forty-two".