42131421445 has 8 divisors (see below), whose sum is σ = 51790820760. Its totient is φ = 32883060480.

The previous prime is 42131421439. The next prime is 42131421461. The reversal of 42131421445 is 54412413124.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 286218724 + 41845202721 = 16918^2 + 204561^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-42131421445 is a prime.

It is a super-3 number, since 3×42131421445³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 102759360 + ... + 102759769.

It is an arithmetic number, because the mean of its divisors is an integer number (6473852595).

Almost surely, 2^42131421445 is an apocalyptic number.

It is an amenable number.

42131421445 is a deficient number, since it is larger than the sum of its proper divisors (9659399315).

42131421445 is a wasteful number, since it uses less digits than its factorization.

42131421445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205519175.

The product of its digits is 15360, while the sum is 31.

Adding to 42131421445 its reverse (54412413124), we get a palindrome (96543834569).

The spelling of 42131421445 in words is "forty-two billion, one hundred thirty-one million, four hundred twenty-one thousand, four hundred forty-five".