2405742321 has 8 divisors (see below), whose sum is σ = 3311129344. Its totient is φ = 1552091760.

The previous prime is 2405742307. The next prime is 2405742347. The reversal of 2405742321 is 1232475042.

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

It is not a de Polignac number, because 2405742321 - 2⁷ = 2405742193 is a prime.

It is a super-2 number, since 2×2405742321² = 11575192230100934082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2405747321) 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, 12934006 + ... + 12934191.

It is an arithmetic number, because the mean of its divisors is an integer number (413891168).

Almost surely, 2^2405742321 is an apocalyptic number.

It is an amenable number.

2405742321 is a deficient number, since it is larger than the sum of its proper divisors (905387023).

2405742321 is a wasteful number, since it uses less digits than its factorization.

2405742321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25868231.

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 2405742321 is about 49048.3671593663. The cubic root of 2405742321 is about 1339.9328549187.

The spelling of 2405742321 in words is "two billion, four hundred five million, seven hundred forty-two thousand, three hundred twenty-one".