40129055 has 8 divisors (see below), whose sum is σ = 48190992. Its totient is φ = 32079168.

The previous prime is 40129039. The next prime is 40129087. The reversal of 40129055 is 55092104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40129055 - 2⁴ = 40129039 is a prime.

It is a super-2 number, since 2×40129055² = 3220682110386050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7952 + ... + 11978.

It is an arithmetic number, because the mean of its divisors is an integer number (6023874).

Almost surely, 2^40129055 is an apocalyptic number.

40129055 is a deficient number, since it is larger than the sum of its proper divisors (8061937).

40129055 is a wasteful number, since it uses less digits than its factorization.

40129055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6025.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 40129055 is about 6334.7497977426. The cubic root of 40129055 is about 342.3625960639.

The spelling of 40129055 in words is "forty million, one hundred twenty-nine thousand, fifty-five".