120213403 has 2 divisors, whose sum is σ = 120213404. Its totient is φ = 120213402.

The previous prime is 120213391. The next prime is 120213413. The reversal of 120213403 is 304312021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120213403 - 2¹⁷ = 120082331 is a prime.

It is not a weakly prime, because it can be changed into another prime (120213413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60106701 + 60106702.

It is an arithmetic number, because the mean of its divisors is an integer number (60106702).

Almost surely, 2^120213403 is an apocalyptic number.

120213403 is a deficient number, since it is larger than the sum of its proper divisors (1).

120213403 is an equidigital number, since it uses as much as digits as its factorization.

120213403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 120213403 is about 10964.1872931832. The cubic root of 120213403 is about 493.5346289670.

Adding to 120213403 its reverse (304312021), we get a palindrome (424525424).

The spelling of 120213403 in words is "one hundred twenty million, two hundred thirteen thousand, four hundred three".