123402011 has 2 divisors, whose sum is σ = 123402012. Its totient is φ = 123402010.

The previous prime is 123401977. The next prime is 123402023. The reversal of 123402011 is 110204321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123402011 - 2⁶ = 123401947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123402091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61701005 + 61701006.

It is an arithmetic number, because the mean of its divisors is an integer number (61701006).

Almost surely, 2^123402011 is an apocalyptic number.

123402011 is a deficient number, since it is larger than the sum of its proper divisors (1).

123402011 is an equidigital number, since it uses as much as digits as its factorization.

123402011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 123402011 is about 11108.6457770513. The cubic root of 123402011 is about 497.8602036062.

Adding to 123402011 its reverse (110204321), we get a palindrome (233606332).

The spelling of 123402011 in words is "one hundred twenty-three million, four hundred two thousand, eleven".