123402010 has 24 divisors (see below), whose sum is σ = 229537908. Its totient is φ = 47764800.

The previous prime is 123401977. The next prime is 123402011. The reversal of 123402010 is 10204321.

It can be written as a sum of positive squares in 2 ways, for example, as 122478489 + 923521 = 11067^2 + 961^2 .

It is not an unprimeable number, because it can be changed into a prime (123402011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3190 + ... + 16030.

Almost surely, 2^123402010 is an apocalyptic number.

123402010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123402010 is a deficient number, since it is larger than the sum of its proper divisors (106135898).

123402010 is a wasteful number, since it uses less digits than its factorization.

123402010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12910 (or 12879 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 123402010 is about 11108.6457320413. The cubic root of 123402010 is about 497.8602022614.

Adding to 123402010 its reverse (10204321), we get a palindrome (133606331).

The spelling of 123402010 in words is "one hundred twenty-three million, four hundred two thousand, ten".