40021342042 has 8 divisors (see below), whose sum is σ = 65489468832. Its totient is φ = 18191519100.

The previous prime is 40021341991. The next prime is 40021342043. The reversal of 40021342042 is 24024312004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 1819151911 = 40021342042 / (4 + 0 + 0 + 2 + 1 + 3 + 4 + 2 + 0 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (40021342043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 909575934 + ... + 909575977.

It is an arithmetic number, because the mean of its divisors is an integer number (8186183604).

Almost surely, 2^40021342042 is an apocalyptic number.

40021342042 is a deficient number, since it is larger than the sum of its proper divisors (25468126790).

40021342042 is a wasteful number, since it uses less digits than its factorization.

40021342042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819151924.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 40021342042 its reverse (24024312004), we get a palindrome (64045654046).

The spelling of 40021342042 in words is "forty billion, twenty-one million, three hundred forty-two thousand, forty-two".