1213902 has 24 divisors (see below), whose sum is σ = 2785536. Its totient is φ = 380736.

The previous prime is 1213897. The next prime is 1213907. The reversal of 1213902 is 2093121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1213897) and next prime (1213907).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1678 + ... + 2289.

It is an arithmetic number, because the mean of its divisors is an integer number (116064).

2^1213902 is an apocalyptic number.

1213902 is an abundant number, since it is smaller than the sum of its proper divisors (1571634).

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

1213902 is a wasteful number, since it uses less digits than its factorization.

1213902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3992 (or 3989 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1213902 is about 1101.7722087619. The cubic root of 1213902 is about 106.6746456705.

The spelling of 1213902 in words is "one million, two hundred thirteen thousand, nine hundred two".