1402812049 has 4 divisors (see below), whose sum is σ = 1403505460. Its totient is φ = 1402118640.

The previous prime is 1402812017. The next prime is 1402812097. The reversal of 1402812049 is 9402182041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9402182041 = 7 ⋅1343168863.

It can be written as a sum of positive squares in 2 ways, for example, as 1091113024 + 311699025 = 33032^2 + 17655^2 .

It is a cyclic number.

It is not a de Polignac number, because 1402812049 - 2⁵ = 1402812017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1402812049.

It is not an unprimeable number, because it can be changed into a prime (1402812449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343662 + ... + 347719.

It is an arithmetic number, because the mean of its divisors is an integer number (350876365).

Almost surely, 2^1402812049 is an apocalyptic number.

It is an amenable number.

1402812049 is a deficient number, since it is larger than the sum of its proper divisors (693411).

1402812049 is an equidigital number, since it uses as much as digits as its factorization.

1402812049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693410.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1402812049 is about 37454.1326024245. The cubic root of 1402812049 is about 1119.4374430904.

The spelling of 1402812049 in words is "one billion, four hundred two million, eight hundred twelve thousand, forty-nine".