1230120402 has 96 divisors (see below), whose sum is σ = 2928581568. Its totient is φ = 343373184.

The previous prime is 1230120383. The next prime is 1230120421. The reversal of 1230120402 is 2040210321.

It is an interprime number because it is at equal distance from previous prime (1230120383) and next prime (1230120421).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 3880348 + ... + 3880664.

It is an arithmetic number, because the mean of its divisors is an integer number (30506058).

Almost surely, 2^1230120402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230120402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1464290784).

1230120402 is an abundant number, since it is smaller than the sum of its proper divisors (1698461166).

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

1230120402 is a wasteful number, since it uses less digits than its factorization.

1230120402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 593 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1230120402 is about 35073.0723205139. The cubic root of 1230120402 is about 1071.4762288948.

Adding to 1230120402 its reverse (2040210321), we get a palindrome (3270330723).

The spelling of 1230120402 in words is "one billion, two hundred thirty million, one hundred twenty thousand, four hundred two".