40021342 has 16 divisors (see below), whose sum is σ = 61149600. Its totient is φ = 19641600.

The previous prime is 40021339. The next prime is 40021361. The reversal of 40021342 is 24312004.

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, 26134 + ... + 27622.

It is an arithmetic number, because the mean of its divisors is an integer number (3821850).

Almost surely, 2^40021342 is an apocalyptic number.

40021342 is a deficient number, since it is larger than the sum of its proper divisors (21128258).

40021342 is a wasteful number, since it uses less digits than its factorization.

40021342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 40021342 is about 6326.2423285865. The cubic root of 40021342 is about 342.0560023654.

Adding to 40021342 its reverse (24312004), we get a palindrome (64333346).

The spelling of 40021342 in words is "forty million, twenty-one thousand, three hundred forty-two".