40270123 has 2 divisors, whose sum is σ = 40270124. Its totient is φ = 40270122.

The previous prime is 40270121. The next prime is 40270151. The reversal of 40270123 is 32107204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40270123 - 2¹ = 40270121 is a prime.

Together with 40270121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 40270123.

It is not a weakly prime, because it can be changed into another prime (40270121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20135061 + 20135062.

It is an arithmetic number, because the mean of its divisors is an integer number (20135062).

Almost surely, 2^40270123 is an apocalyptic number.

40270123 is a deficient number, since it is larger than the sum of its proper divisors (1).

40270123 is an equidigital number, since it uses as much as digits as its factorization.

40270123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 40270123 is about 6345.8744866251. The cubic root of 40270123 is about 342.7633026003.

Adding to 40270123 its reverse (32107204), we get a palindrome (72377327).

The spelling of 40270123 in words is "forty million, two hundred seventy thousand, one hundred twenty-three".