40220421242 has 8 divisors (see below), whose sum is σ = 60380208756. Its totient is φ = 20093684992.

The previous prime is 40220421223. The next prime is 40220421253. The reversal of 40220421242 is 24212402204.

It can be written as a sum of positive squares in 2 ways, for example, as 40219901401 + 519841 = 200549^2 + 721^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8259773 + ... + 8264640.

Almost surely, 2^40220421242 is an apocalyptic number.

40220421242 is a deficient number, since it is larger than the sum of its proper divisors (20159787514).

40220421242 is a wasteful number, since it uses less digits than its factorization.

40220421242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16525632.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 40220421242 its reverse (24212402204), we get a palindrome (64432823446).

The spelling of 40220421242 in words is "forty billion, two hundred twenty million, four hundred twenty-one thousand, two hundred forty-two".