1405996442 has 8 divisors (see below), whose sum is σ = 2143568532. Its totient is φ = 691473600.

The previous prime is 1405996429. The next prime is 1405996469. The reversal of 1405996442 is 2446995041.

It can be written as a sum of positive squares in 2 ways, for example, as 1396442161 + 9554281 = 37369^2 + 3091^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1405996393 and 1405996402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5762159 + ... + 5762402.

Almost surely, 2^1405996442 is an apocalyptic number.

1405996442 is a deficient number, since it is larger than the sum of its proper divisors (737572090).

1405996442 is a wasteful number, since it uses less digits than its factorization.

1405996442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11524624.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 1405996442 is about 37496.6190742579. The cubic root of 1405996442 is about 1120.2838465311.

The spelling of 1405996442 in words is "one billion, four hundred five million, nine hundred ninety-six thousand, four hundred forty-two".