1400402 has 4 divisors (see below), whose sum is σ = 2100606. Its totient is φ = 700200.

The previous prime is 1400387. The next prime is 1400411. The reversal of 1400402 is 2040041.

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., 1343281 + 57121 = 1159^2 + 239^2 .

It is a super-2 number, since 2×1400402² = 3922251523208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350099 + ... + 350102.

2^1400402 is an apocalyptic number.

1400402 is a deficient number, since it is larger than the sum of its proper divisors (700204).

1400402 is an equidigital number, since it uses as much as digits as its factorization.

1400402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700203.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 1400402 is about 1183.3858204322. The cubic root of 1400402 is about 111.8796006347.

Adding to 1400402 its reverse (2040041), we get a palindrome (3440443).

The spelling of 1400402 in words is "one million, four hundred thousand, four hundred two".