40420144031 has 8 divisors (see below), whose sum is σ = 41197131360. Its totient is φ = 39643688032.

The previous prime is 40420143923. The next prime is 40420144067. The reversal of 40420144031 is 13044102404.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40420144031 is a prime.

It is a super-2 number, since 2×40420144031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40420143988 and 40420144006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40420144091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22505 + ... + 285213.

It is an arithmetic number, because the mean of its divisors is an integer number (5149641420).

Almost surely, 2^40420144031 is an apocalyptic number.

40420144031 is a deficient number, since it is larger than the sum of its proper divisors (776987329).

40420144031 is a wasteful number, since it uses less digits than its factorization.

40420144031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265665.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 40420144031 its reverse (13044102404), we get a palindrome (53464246435).

The spelling of 40420144031 in words is "forty billion, four hundred twenty million, one hundred forty-four thousand, thirty-one".