40033420 has 24 divisors (see below), whose sum is σ = 96080544. Its totient is φ = 13725696.

The previous prime is 40033417. The next prime is 40033423. The reversal of 40033420 is 2433004.

It is an interprime number because it is at equal distance from previous prime (40033417) and next prime (40033423).

It is a junction number, because it is equal to n+sod(n) for n = 40033394 and 40033403.

It is not an unprimeable number, because it can be changed into a prime (40033423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142837 + ... + 143116.

It is an arithmetic number, because the mean of its divisors is an integer number (4003356).

Almost surely, 2^40033420 is an apocalyptic number.

It is an amenable number.

40033420 is an abundant number, since it is smaller than the sum of its proper divisors (56047124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40033420 is a wasteful number, since it uses less digits than its factorization.

40033420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285969 (or 285967 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 40033420 is about 6327.1968516872. The cubic root of 40033420 is about 342.0904084820.

Adding to 40033420 its reverse (2433004), we get a palindrome (42466424).

The spelling of 40033420 in words is "forty million, thirty-three thousand, four hundred twenty".