1402749 has 6 divisors (see below), whose sum is σ = 2026206. Its totient is φ = 935160.

The previous prime is 1402727. The next prime is 1402763. The reversal of 1402749 is 9472041.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1397124 + 5625 = 1182^2 + 75^2 .

It is not a de Polignac number, because 1402749 - 2⁸ = 1402493 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402799) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77922 + ... + 77939.

It is an arithmetic number, because the mean of its divisors is an integer number (337701).

2^1402749 is an apocalyptic number.

It is an amenable number.

1402749 is a deficient number, since it is larger than the sum of its proper divisors (623457).

1402749 is a wasteful number, since it uses less digits than its factorization.

1402749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155867 (or 155864 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1402749 is about 1184.3770514494. The cubic root of 1402749 is about 111.9420671904.

The spelling of 1402749 in words is "one million, four hundred two thousand, seven hundred forty-nine".