40272129 has 12 divisors (see below), whose sum is σ = 58968676. Its totient is φ = 26479872.

The previous prime is 40272079. The next prime is 40272137. The reversal of 40272129 is 92127204.

It can be written as a sum of positive squares in 2 ways, for example, as 16769025 + 23503104 = 4095^2 + 4848^2 .

It is not a de Polignac number, because 40272129 - 2⁹ = 40271617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40272929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29992 + ... + 31305.

Almost surely, 2^40272129 is an apocalyptic number.

It is an amenable number.

40272129 is a deficient number, since it is larger than the sum of its proper divisors (18696547).

40272129 is a wasteful number, since it uses less digits than its factorization.

40272129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61376 (or 61373 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 40272129 is about 6346.0325400994. The cubic root of 40272129 is about 342.7689939310.

It can be divided in two parts, 40272 and 129, that added together give a square (40401 = 201²).

The spelling of 40272129 in words is "forty million, two hundred seventy-two thousand, one hundred twenty-nine".