120906403 has 2 divisors, whose sum is σ = 120906404. Its totient is φ = 120906402.

The previous prime is 120906389. The next prime is 120906407. The reversal of 120906403 is 304609021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120906403 is a prime.

It is not a weakly prime, because it can be changed into another prime (120906407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60453201 + 60453202.

It is an arithmetic number, because the mean of its divisors is an integer number (60453202).

Almost surely, 2^120906403 is an apocalyptic number.

120906403 is a deficient number, since it is larger than the sum of its proper divisors (1).

120906403 is an equidigital number, since it uses as much as digits as its factorization.

120906403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 120906403 is about 10995.7447678636. The cubic root of 120906403 is about 494.4811800375.

The spelling of 120906403 in words is "one hundred twenty million, nine hundred six thousand, four hundred three".