42750279 has 48 divisors (see below), whose sum is σ = 73906560. Its totient is φ = 23469120.

The previous prime is 42750269. The next prime is 42750293. The reversal of 42750279 is 97205724.

It is not a de Polignac number, because 42750279 - 2⁹ = 42749767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42750269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75652 + ... + 76214.

It is an arithmetic number, because the mean of its divisors is an integer number (1539720).

Almost surely, 2^42750279 is an apocalyptic number.

42750279 is a deficient number, since it is larger than the sum of its proper divisors (31156281).

42750279 is a wasteful number, since it uses less digits than its factorization.

42750279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 42750279 is about 6538.3697509394. The cubic root of 42750279 is about 349.6602935202.

Subtracting 42750279 from its reverse (97205724), we obtain a palindrome (54455445).

The spelling of 42750279 in words is "forty-two million, seven hundred fifty thousand, two hundred seventy-nine".