4272157 has 2 divisors, whose sum is σ = 4272158. Its totient is φ = 4272156.

The previous prime is 4272139. The next prime is 4272161. The reversal of 4272157 is 7512724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2452356 + 1819801 = 1566^2 + 1349^2 .

It is a cyclic number.

It is not a de Polignac number, because 4272157 - 2⁷ = 4272029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4272167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2136078 + 2136079.

It is an arithmetic number, because the mean of its divisors is an integer number (2136079).

Almost surely, 2^4272157 is an apocalyptic number.

It is an amenable number.

4272157 is a deficient number, since it is larger than the sum of its proper divisors (1).

4272157 is an equidigital number, since it uses as much as digits as its factorization.

4272157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3920, while the sum is 28.

The square root of 4272157 is about 2066.9196888123. The cubic root of 4272157 is about 162.2615928051.

It can be divided in two parts, 42721 and 57, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 4272157 in words is "four million, two hundred seventy-two thousand, one hundred fifty-seven".