2124253994 has 4 divisors (see below), whose sum is σ = 3186380994. Its totient is φ = 1062126996.

The previous prime is 2124253991. The next prime is 2124253997. The reversal of 2124253994 is 4993524212.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2124253991) and next prime (2124253997).

It can be written as a sum of positive squares in only one way, i.e., 2103414769 + 20839225 = 45863^2 + 4565^2 .

It is not an unprimeable number, because it can be changed into a prime (2124253991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 531063497 + ... + 531063500.

Almost surely, 2^2124253994 is an apocalyptic number.

2124253994 is a deficient number, since it is larger than the sum of its proper divisors (1062127000).

2124253994 is a wasteful number, since it uses less digits than its factorization.

2124253994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062126999.

The product of its digits is 155520, while the sum is 41.

The square root of 2124253994 is about 46089.6300050239. The cubic root of 2124253994 is about 1285.4903313287.

The spelling of 2124253994 in words is "two billion, one hundred twenty-four million, two hundred fifty-three thousand, nine hundred ninety-four".