40655123 has 2 divisors, whose sum is σ = 40655124. Its totient is φ = 40655122.

The previous prime is 40655107. The next prime is 40655179. The reversal of 40655123 is 32155604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40655123 - 2⁴ = 40655107 is a prime.

It is a super-2 number, since 2×40655123² = 3305678052290258, which contains 22 as substring.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 40655092 and 40655101.

It is not a weakly prime, because it can be changed into another prime (40652123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20327561 + 20327562.

It is an arithmetic number, because the mean of its divisors is an integer number (20327562).

Almost surely, 2^40655123 is an apocalyptic number.

40655123 is a deficient number, since it is larger than the sum of its proper divisors (1).

40655123 is an equidigital number, since it uses as much as digits as its factorization.

40655123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 40655123 is about 6376.1369966462. The cubic root of 40655123 is about 343.8521623396.

The spelling of 40655123 in words is "forty million, six hundred fifty-five thousand, one hundred twenty-three".