1402406 has 8 divisors (see below), whose sum is σ = 2113560. Its totient is φ = 697888.

The previous prime is 1402399. The next prime is 1402417. The reversal of 1402406 is 6042041.

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

It is a congruent number.

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, 1091 + ... + 1998.

It is an arithmetic number, because the mean of its divisors is an integer number (264195).

2^1402406 is an apocalyptic number.

1402406 is a deficient number, since it is larger than the sum of its proper divisors (711154).

1402406 is a wasteful number, since it uses less digits than its factorization.

1402406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1402406 is about 1184.2322407366. The cubic root of 1402406 is about 111.9329424268.

Adding to 1402406 its reverse (6042041), we get a palindrome (7444447).

The spelling of 1402406 in words is "one million, four hundred two thousand, four hundred six".