40430442 has 32 divisors (see below), whose sum is σ = 91667520. Its totient is φ = 11784960.

The previous prime is 40430419. The next prime is 40430447. The reversal of 40430442 is 24403404.

It is not an unprimeable number, because it can be changed into a prime (40430447) 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, 12159 + ... + 15122.

It is an arithmetic number, because the mean of its divisors is an integer number (2864610).

Almost surely, 2^40430442 is an apocalyptic number.

40430442 is an abundant number, since it is smaller than the sum of its proper divisors (51237078).

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

40430442 is a wasteful number, since it uses less digits than its factorization.

40430442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27318.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 40430442 is about 6358.4936895463. The cubic root of 40430442 is about 343.2175575534.

Adding to 40430442 its reverse (24403404), we get a palindrome (64833846).

The spelling of 40430442 in words is "forty million, four hundred thirty thousand, four hundred forty-two".