40294157 has 2 divisors, whose sum is σ = 40294158. Its totient is φ = 40294156.

The previous prime is 40294129. The next prime is 40294211. The reversal of 40294157 is 75149204.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38180041 + 2114116 = 6179^2 + 1454^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40294157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40294957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20147078 + 20147079.

It is an arithmetic number, because the mean of its divisors is an integer number (20147079).

Almost surely, 2^40294157 is an apocalyptic number.

It is an amenable number.

40294157 is a deficient number, since it is larger than the sum of its proper divisors (1).

40294157 is an equidigital number, since it uses as much as digits as its factorization.

40294157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 40294157 is about 6347.7678754031. The cubic root of 40294157 is about 342.8314783286.

The spelling of 40294157 in words is "forty million, two hundred ninety-four thousand, one hundred fifty-seven".