1405402 has 4 divisors (see below), whose sum is σ = 2108106. Its totient is φ = 702700.

The previous prime is 1405387. The next prime is 1405403. The reversal of 1405402 is 2045041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 826281 + 579121 = 909^2 + 761^2 .

It is not an unprimeable number, because it can be changed into a prime (1405403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 351349 + ... + 351352.

2^1405402 is an apocalyptic number.

1405402 is a deficient number, since it is larger than the sum of its proper divisors (702704).

1405402 is an equidigital number, since it uses as much as digits as its factorization.

1405402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702703.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 1405402 is about 1185.4965204504. The cubic root of 1405402 is about 112.0125942470.

The spelling of 1405402 in words is "one million, four hundred five thousand, four hundred two".