1382402121 has 16 divisors (see below), whose sum is σ = 1861574400. Its totient is φ = 912452688.

The previous prime is 1382402081. The next prime is 1382402129. The reversal of 1382402121 is 1212042831.

It is not a de Polignac number, because 1382402121 - 2¹⁸ = 1382139977 is a prime.

It is a super-2 number, since 2×1382402121² = 3822071248290597282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1382402091 and 1382402100.

It is not an unprimeable number, because it can be changed into a prime (1382402129) 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 15 ways as a sum of consecutive naturals, for example, 153670 + ... + 162416.

It is an arithmetic number, because the mean of its divisors is an integer number (116348400).

Almost surely, 2^1382402121 is an apocalyptic number.

It is an amenable number.

1382402121 is a deficient number, since it is larger than the sum of its proper divisors (479172279).

1382402121 is a wasteful number, since it uses less digits than its factorization.

1382402121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9268.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1382402121 is about 37180.6686464889. The cubic root of 1382402121 is about 1113.9818897896.

Adding to 1382402121 its reverse (1212042831), we get a palindrome (2594444952).

The spelling of 1382402121 in words is "one billion, three hundred eighty-two million, four hundred two thousand, one hundred twenty-one".