123402001 has 8 divisors (see below), whose sum is σ = 124210944. Its totient is φ = 122596320.

The previous prime is 123401977. The next prime is 123402011. The reversal of 123402001 is 100204321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123402001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123402011) 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, 143565 + ... + 144421.

It is an arithmetic number, because the mean of its divisors is an integer number (15526368).

Almost surely, 2^123402001 is an apocalyptic number.

It is an amenable number.

123402001 is a deficient number, since it is larger than the sum of its proper divisors (808943).

123402001 is an equidigital number, since it uses as much as digits as its factorization.

123402001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631.

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

The square root of 123402001 is about 11108.6453269514. The cubic root of 123402001 is about 497.8601901580.

Adding to 123402001 its reverse (100204321), we get a palindrome (223606322).

It can be divided in two parts, 12340 and 2001, that added together give a palindrome (14341).

The spelling of 123402001 in words is "one hundred twenty-three million, four hundred two thousand, one".