2129744157 has 8 divisors (see below), whose sum is σ = 2866198176. Its totient is φ = 1406559792.

The previous prime is 2129744107. The next prime is 2129744167. The reversal of 2129744157 is 7514479212.

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

It is not a de Polignac number, because 2129744157 - 2¹⁴ = 2129727773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129744107) 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, 3317038 + ... + 3317679.

It is an arithmetic number, because the mean of its divisors is an integer number (358274772).

Almost surely, 2^2129744157 is an apocalyptic number.

It is an amenable number.

2129744157 is a deficient number, since it is larger than the sum of its proper divisors (736454019).

2129744157 is a wasteful number, since it uses less digits than its factorization.

2129744157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6634827.

The product of its digits is 141120, while the sum is 42.

The square root of 2129744157 is about 46149.1512056289. The cubic root of 2129744157 is about 1286.5968342981.

The spelling of 2129744157 in words is "two billion, one hundred twenty-nine million, seven hundred forty-four thousand, one hundred fifty-seven".