40205342 has 4 divisors (see below), whose sum is σ = 60308016. Its totient is φ = 20102670.

The previous prime is 40205317. The next prime is 40205353. The reversal of 40205342 is 24350204.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051334 + ... + 10051337.

It is an arithmetic number, because the mean of its divisors is an integer number (15077004).

Almost surely, 2^40205342 is an apocalyptic number.

40205342 is a deficient number, since it is larger than the sum of its proper divisors (20102674).

40205342 is a wasteful number, since it uses less digits than its factorization.

40205342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20102673.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 40205342 is about 6340.7682499836. The cubic root of 40205342 is about 342.5794072370.

Adding to 40205342 its reverse (24350204), we get a palindrome (64555546).

The spelling of 40205342 in words is "forty million, two hundred five thousand, three hundred forty-two".