1405735042 has 4 divisors (see below), whose sum is σ = 2108602566. Its totient is φ = 702867520.

The previous prime is 1405735033. The next prime is 1405735073. The reversal of 1405735042 is 2405375041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2405375041 = 25367 ⋅94823.

It can be written as a sum of positive squares in only one way, i.e., 1006094961 + 399640081 = 31719^2 + 19991^2 .

It is a super-3 number, since 3×1405735042³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1405734995 and 1405735013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 351433759 + ... + 351433762.

Almost surely, 2^1405735042 is an apocalyptic number.

1405735042 is a deficient number, since it is larger than the sum of its proper divisors (702867524).

1405735042 is an equidigital number, since it uses as much as digits as its factorization.

1405735042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702867523.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 1405735042 is about 37493.1332646393. The cubic root of 1405735042 is about 1120.2144152630.

The spelling of 1405735042 in words is "one billion, four hundred five million, seven hundred thirty-five thousand, forty-two".