42951072 has 48 divisors (see below), whose sum is σ = 113091552. Its totient is φ = 14273280.

The previous prime is 42951049. The next prime is 42951079. The reversal of 42951072 is 27015924.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (42951079) 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 7 ways as a sum of consecutive naturals, for example, 51523 + ... + 52349.

It is an arithmetic number, because the mean of its divisors is an integer number (2356074).

Almost surely, 2^42951072 is an apocalyptic number.

It is an amenable number.

42951072 is an abundant number, since it is smaller than the sum of its proper divisors (70140480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42951072 is a wasteful number, since it uses less digits than its factorization.

42951072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381 (or 1373 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 42951072 is about 6553.7067374120. The cubic root of 42951072 is about 350.2068763359.

Adding to 42951072 its reverse (27015924), we get a palindrome (69966996).

The spelling of 42951072 in words is "forty-two million, nine hundred fifty-one thousand, seventy-two".