1002111142402 has 16 divisors (see below), whose sum is σ = 1505194923960. Its totient is φ = 500379804288.

The previous prime is 1002111142391. The next prime is 1002111142423. The reversal of 1002111142402 is 2042411112001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 515424920761 + 486686221641 = 717931^2 + 697629^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1002111142402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6742224 + ... + 6889252.

Almost surely, 2^{1002111142402} is an apocalyptic number.

1002111142402 is a deficient number, since it is larger than the sum of its proper divisors (503083781558).

1002111142402 is a wasteful number, since it uses less digits than its factorization.

1002111142402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151605.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1002111142402 its reverse (2042411112001), we get a palindrome (3044522254403).

The spelling of 1002111142402 in words is "one trillion, two billion, one hundred eleven million, one hundred forty-two thousand, four hundred two".