40424145 has 16 divisors (see below), whose sum is σ = 65776320. Its totient is φ = 21193664.

The previous prime is 40424141. The next prime is 40424149. The reversal of 40424145 is 54142404.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40424141) and next prime (40424149).

It is a cyclic number.

It is not a de Polignac number, because 40424145 - 2² = 40424141 is a prime.

It is a super-2 number, since 2×40424145² = 3268222997962050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40424141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21954 + ... + 23723.

It is an arithmetic number, because the mean of its divisors is an integer number (4111020).

Almost surely, 2^40424145 is an apocalyptic number.

It is an amenable number.

40424145 is a deficient number, since it is larger than the sum of its proper divisors (25352175).

40424145 is a wasteful number, since it uses less digits than its factorization.

40424145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45744.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 40424145 is about 6357.9985058193. The cubic root of 40424145 is about 343.1997380337.

Adding to 40424145 its reverse (54142404), we get a palindrome (94566549).

The spelling of 40424145 in words is "forty million, four hundred twenty-four thousand, one hundred forty-five".