42371551 has 2 divisors, whose sum is σ = 42371552. Its totient is φ = 42371550.

The previous prime is 42371533. The next prime is 42371569. The reversal of 42371551 is 15517324.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (42371533) and next prime (42371569).

It is a cyclic number.

It is not a de Polignac number, because 42371551 - 2¹³ = 42363359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42371591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21185775 + 21185776.

It is an arithmetic number, because the mean of its divisors is an integer number (21185776).

Almost surely, 2^42371551 is an apocalyptic number.

42371551 is a deficient number, since it is larger than the sum of its proper divisors (1).

42371551 is an equidigital number, since it uses as much as digits as its factorization.

42371551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4200, while the sum is 28.

The square root of 42371551 is about 6509.3433616610. The cubic root of 42371551 is about 348.6246734755.

Adding to 42371551 its reverse (15517324), we get a palindrome (57888875).

The spelling of 42371551 in words is "forty-two million, three hundred seventy-one thousand, five hundred fifty-one".