2070421 has 2 divisors, whose sum is σ = 2070422. Its totient is φ = 2070420.

The previous prime is 2070371. The next prime is 2070427. The reversal of 2070421 is 1240702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1347921 + 722500 = 1161^2 + 850^2 .

It is a cyclic number.

It is not a de Polignac number, because 2070421 - 2⁹ = 2069909 is a prime.

2070421 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2070395 and 2070404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2070427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1035210 + 1035211.

It is an arithmetic number, because the mean of its divisors is an integer number (1035211).

2^2070421 is an apocalyptic number.

It is an amenable number.

2070421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2070421 is an equidigital number, since it uses as much as digits as its factorization.

2070421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 2070421 is about 1438.8957571694. The cubic root of 2070421 is about 127.4538292392.

The spelling of 2070421 in words is "two million, seventy thousand, four hundred twenty-one".