1002400442 has 16 divisors (see below), whose sum is σ = 1609567200. Its totient is φ = 466772400.

The previous prime is 1002400417. The next prime is 1002400471. The reversal of 1002400442 is 2440042001.

It is a super-2 number, since 2×1002400442² = 2009613292243590728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1002400442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221309 + ... + 225792.

It is an arithmetic number, because the mean of its divisors is an integer number (100597950).

Almost surely, 2^1002400442 is an apocalyptic number.

1002400442 is a deficient number, since it is larger than the sum of its proper divisors (607166758).

1002400442 is a wasteful number, since it uses less digits than its factorization.

1002400442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447181.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 1002400442 is about 31660.7081727494. The cubic root of 1002400442 is about 1000.7995079500.

Adding to 1002400442 its reverse (2440042001), we get a palindrome (3442442443).

The spelling of 1002400442 in words is "one billion, two million, four hundred thousand, four hundred forty-two".