3121420037 has 2 divisors, whose sum is σ = 3121420038. Its totient is φ = 3121420036.

The previous prime is 3121420019. The next prime is 3121420063. The reversal of 3121420037 is 7300241213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3070711396 + 50708641 = 55414^2 + 7121^2 .

It is a cyclic number.

It is not a de Polignac number, because 3121420037 - 2⁸ = 3121419781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3121419994 and 3121420021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121420007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560710018 + 1560710019.

It is an arithmetic number, because the mean of its divisors is an integer number (1560710019).

Almost surely, 2^3121420037 is an apocalyptic number.

It is an amenable number.

3121420037 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121420037 is an equidigital number, since it uses as much as digits as its factorization.

3121420037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 3121420037 is about 55869.6700992587. The cubic root of 3121420037 is about 1461.4503690984.

The spelling of 3121420037 in words is "three billion, one hundred twenty-one million, four hundred twenty thousand, thirty-seven".