1402247 has 8 divisors (see below), whose sum is σ = 1748352. Its totient is φ = 1092600.

The previous prime is 1402231. The next prime is 1402249. The reversal of 1402247 is 7422041.

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

It is a cyclic number.

It is not a de Polignac number, because 1402247 - 2⁴ = 1402231 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402249) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 9029 + ... + 9182.

It is an arithmetic number, because the mean of its divisors is an integer number (218544).

2^1402247 is an apocalyptic number.

1402247 is a deficient number, since it is larger than the sum of its proper divisors (346105).

1402247 is a wasteful number, since it uses less digits than its factorization.

1402247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18229.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 1402247 is about 1184.1651067313. The cubic root of 1402247 is about 111.9287120754.

Adding to 1402247 its reverse (7422041), we get a palindrome (8824288).

The spelling of 1402247 in words is "one million, four hundred two thousand, two hundred forty-seven".