290445242 has 16 divisors (see below), whose sum is σ = 464285952. Its totient is φ = 135952080.

The previous prime is 290445241. The next prime is 290445277. The reversal of 290445242 is 242544092.

It is a junction number, because it is equal to n+sod(n) for n = 290445199 and 290445208.

It is not an unprimeable number, because it can be changed into a prime (290445241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65009 + ... + 69332.

It is an arithmetic number, because the mean of its divisors is an integer number (29017872).

Almost surely, 2^290445242 is an apocalyptic number.

290445242 is a deficient number, since it is larger than the sum of its proper divisors (173840710).

290445242 is a wasteful number, since it uses less digits than its factorization.

290445242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134413.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 290445242 is about 17042.4541073168. The cubic root of 290445242 is about 662.2491691715.

The spelling of 290445242 in words is "two hundred ninety million, four hundred forty-five thousand, two hundred forty-two".