40342386 has 24 divisors (see below), whose sum is σ = 93858480. Its totient is φ = 11526312.

The previous prime is 40342373. The next prime is 40342409. The reversal of 40342386 is 68324304.

It is a nialpdrome in base 7.

It is a zygodrome in base 7.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68316 + ... + 68903.

It is an arithmetic number, because the mean of its divisors is an integer number (3910770).

Almost surely, 2^40342386 is an apocalyptic number.

40342386 is an abundant number, since it is smaller than the sum of its proper divisors (53516094).

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

40342386 is a wasteful number, since it uses less digits than its factorization.

40342386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137238 (or 137231 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 40342386 is about 6351.5656337631. The cubic root of 40342386 is about 342.9682047440.

The spelling of 40342386 in words is "forty million, three hundred forty-two thousand, three hundred eighty-six".