1240002 has 16 divisors (see below), whose sum is σ = 2755680. Its totient is φ = 413316.

The previous prime is 1239989. The next prime is 1240007. The reversal of 1240002 is 2000421.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1240007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11428 + ... + 11535.

It is an arithmetic number, because the mean of its divisors is an integer number (172230).

2^1240002 is an apocalyptic number.

1240002 is an abundant number, since it is smaller than the sum of its proper divisors (1515678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1240002 is a wasteful number, since it uses less digits than its factorization.

1240002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22974 (or 22968 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 1240002 is about 1113.5537705922. The cubic root of 1240002 is about 107.4337648589.

Adding to 1240002 its reverse (2000421), we get a palindrome (3240423).

The spelling of 1240002 in words is "one million, two hundred forty thousand, two".