1402542401 has 4 divisors (see below), whose sum is σ = 1510430292. Its totient is φ = 1294654512.

The previous prime is 1402542377. The next prime is 1402542403. The reversal of 1402542401 is 1042452041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1042452041 = 211 ⋅4940531.

It can be written as a sum of positive squares in 2 ways, for example, as 115455025 + 1287087376 = 10745^2 + 35876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1402542401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1402542403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53943926 + ... + 53943951.

It is an arithmetic number, because the mean of its divisors is an integer number (377607573).

Almost surely, 2^1402542401 is an apocalyptic number.

It is an amenable number.

1402542401 is a deficient number, since it is larger than the sum of its proper divisors (107887891).

1402542401 is a wasteful number, since it uses less digits than its factorization.

1402542401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107887890.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1402542401 is about 37450.5327198426. The cubic root of 1402542401 is about 1119.3657125473.

Adding to 1402542401 its reverse (1042452041), we get a palindrome (2444994442).

The spelling of 1402542401 in words is "one billion, four hundred two million, five hundred forty-two thousand, four hundred one".