4021071157 has 2 divisors, whose sum is σ = 4021071158. Its totient is φ = 4021071156.

The previous prime is 4021071143. The next prime is 4021071161. The reversal of 4021071157 is 7511701204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3641639716 + 379431441 = 60346^2 + 19479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4021071157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021071167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010535578 + 2010535579.

It is an arithmetic number, because the mean of its divisors is an integer number (2010535579).

Almost surely, 2^4021071157 is an apocalyptic number.

It is an amenable number.

4021071157 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021071157 is an equidigital number, since it uses as much as digits as its factorization.

4021071157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 4021071157 is about 63411.9165220544. The cubic root of 4021071157 is about 1590.1835365575.

The spelling of 4021071157 in words is "four billion, twenty-one million, seventy-one thousand, one hundred fifty-seven".