120031421 has 2 divisors, whose sum is σ = 120031422. Its totient is φ = 120031420.

The previous prime is 120031409. The next prime is 120031433. The reversal of 120031421 is 124130021.

It is a balanced prime because it is at equal distance from previous prime (120031409) and next prime (120031433).

It can be written as a sum of positive squares in only one way, i.e., 88548100 + 31483321 = 9410^2 + 5611^2 .

It is a cyclic number.

It is not a de Polignac number, because 120031421 - 2⁶ = 120031357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120031396 and 120031405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120031451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60015710 + 60015711.

It is an arithmetic number, because the mean of its divisors is an integer number (60015711).

Almost surely, 2^120031421 is an apocalyptic number.

It is an amenable number.

120031421 is a deficient number, since it is larger than the sum of its proper divisors (1).

120031421 is an equidigital number, since it uses as much as digits as its factorization.

120031421 is an odious number, because the sum of its binary digits is odd.

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

The square root of 120031421 is about 10955.8852221078. The cubic root of 120031421 is about 493.2854615812.

Adding to 120031421 its reverse (124130021), we get a palindrome (244161442).

The spelling of 120031421 in words is "one hundred twenty million, thirty-one thousand, four hundred twenty-one".