490900123 has 16 divisors (see below), whose sum is σ = 572203456. Its totient is φ = 412439040.

The previous prime is 490900121. The next prime is 490900133. The reversal of 490900123 is 321009094.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 490900123 - 2¹ = 490900121 is a prime.

It is a super-2 number, since 2×490900123² = 481965861522830258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 490900091 and 490900100.

It is not an unprimeable number, because it can be changed into a prime (490900121) 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, 131815 + ... + 135487.

It is an arithmetic number, because the mean of its divisors is an integer number (35762716).

Almost surely, 2^490900123 is an apocalyptic number.

490900123 is a deficient number, since it is larger than the sum of its proper divisors (81303333).

490900123 is a wasteful number, since it uses less digits than its factorization.

490900123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4054.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 490900123 is about 22156.2659985838. The cubic root of 490900123 is about 788.8559646431.

The spelling of 490900123 in words is "four hundred ninety million, nine hundred thousand, one hundred twenty-three".