1405742039 has 8 divisors (see below), whose sum is σ = 1522943520. Its totient is φ = 1289835936.

The previous prime is 1405742017. The next prime is 1405742059. The reversal of 1405742039 is 9302475041.

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

It is a cyclic number.

It is not a de Polignac number, because 1405742039 - 2²⁰ = 1404693463 is a prime.

It is a super-3 number, since 3×1405742039³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405742059) 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, 321584 + ... + 325925.

It is an arithmetic number, because the mean of its divisors is an integer number (190367940).

Almost surely, 2^1405742039 is an apocalyptic number.

1405742039 is a deficient number, since it is larger than the sum of its proper divisors (117201481).

1405742039 is a wasteful number, since it uses less digits than its factorization.

1405742039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647689.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 1405742039 is about 37493.2265749428. The cubic root of 1405742039 is about 1120.2162738701.

The spelling of 1405742039 in words is "one billion, four hundred five million, seven hundred forty-two thousand, thirty-nine".