2123450490 has 32 divisors (see below), whose sum is σ = 5824321920. Its totient is φ = 485360064.

The previous prime is 2123450489. The next prime is 2123450491. The reversal of 2123450490 is 940543212.

It is an interprime number because it is at equal distance from previous prime (2123450489) and next prime (2123450491).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (2123450491) 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, 5055625 + ... + 5056044.

It is an arithmetic number, because the mean of its divisors is an integer number (182010060).

Almost surely, 2^2123450490 is an apocalyptic number.

2123450490 is an abundant number, since it is smaller than the sum of its proper divisors (3700871430).

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

2123450490 is a wasteful number, since it uses less digits than its factorization.

2123450490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10111686.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2123450490 is about 46080.9124258624. The cubic root of 2123450490 is about 1285.3282309889.

The spelling of 2123450490 in words is "two billion, one hundred twenty-three million, four hundred fifty thousand, four hundred ninety".