245123290 has 8 divisors (see below), whose sum is σ = 441221940. Its totient is φ = 98049312.

The previous prime is 245123287. The next prime is 245123299. The reversal of 245123290 is 92321542.

245123290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 233570089 + 11553201 = 15283^2 + 3399^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (245123299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12256155 + ... + 12256174.

Almost surely, 2^245123290 is an apocalyptic number.

245123290 is a deficient number, since it is larger than the sum of its proper divisors (196098650).

245123290 is a wasteful number, since it uses less digits than its factorization.

245123290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24512336.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 245123290 is about 15656.4137017390. The cubic root of 245123290 is about 625.8374182679.

The spelling of 245123290 in words is "two hundred forty-five million, one hundred twenty-three thousand, two hundred ninety".