1722390042 has 32 divisors (see below), whose sum is σ = 3462480000. Its totient is φ = 571189248.

The previous prime is 1722390041. The next prime is 1722390073. The reversal of 1722390042 is 2400932271.

It is a junction number, because it is equal to n+sod(n) for n = 1722389991 and 1722390009.

It is not an unprimeable number, because it can be changed into a prime (1722390041) 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, 1230459 + ... + 1231857.

It is an arithmetic number, because the mean of its divisors is an integer number (108202500).

Almost surely, 2^1722390042 is an apocalyptic number.

1722390042 is an abundant number, since it is smaller than the sum of its proper divisors (1740089958).

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

1722390042 is a wasteful number, since it uses less digits than its factorization.

1722390042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 1722390042 is about 41501.6872187144. The cubic root of 1722390042 is about 1198.6999907663.

The spelling of 1722390042 in words is "one billion, seven hundred twenty-two million, three hundred ninety thousand, forty-two".