42774740 has 12 divisors (see below), whose sum is σ = 89826996. Its totient is φ = 17109888.

The previous prime is 42774727. The next prime is 42774773. The reversal of 42774740 is 4747724.

It can be written as a sum of positive squares in 2 ways, for example, as 7300804 + 35473936 = 2702^2 + 5956^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42774740.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1069349 + ... + 1069388.

It is an arithmetic number, because the mean of its divisors is an integer number (7485583).

Almost surely, 2^42774740 is an apocalyptic number.

It is an amenable number.

42774740 is an abundant number, since it is smaller than the sum of its proper divisors (47052256).

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

42774740 is a wasteful number, since it uses less digits than its factorization.

42774740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138746 (or 2138744 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 35.

The square root of 42774740 is about 6540.2400567563. The cubic root of 42774740 is about 349.7269707432.

The spelling of 42774740 in words is "forty-two million, seven hundred seventy-four thousand, seven hundred forty".