123121302 has 16 divisors (see below), whose sum is σ = 250280112. Its totient is φ = 40367520.

The previous prime is 123121301. The next prime is 123121303. The reversal of 123121302 is 203121321.

It is an interprime number because it is at equal distance from previous prime (123121301) and next prime (123121303).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123121301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167833 + ... + 168564.

It is an arithmetic number, because the mean of its divisors is an integer number (15642507).

Almost surely, 2^123121302 is an apocalyptic number.

123121302 is an abundant number, since it is smaller than the sum of its proper divisors (127158810).

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

123121302 is a wasteful number, since it uses less digits than its factorization.

123121302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336463.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 123121302 is about 11096.0038752697. The cubic root of 123121302 is about 497.4824141322.

Adding to 123121302 its reverse (203121321), we get a palindrome (326242623).

The spelling of 123121302 in words is "one hundred twenty-three million, one hundred twenty-one thousand, three hundred two".