42651764 has 6 divisors (see below), whose sum is σ = 74640594. Its totient is φ = 21325880.

The previous prime is 42651761. The next prime is 42651769. The reversal of 42651764 is 46715624.

It can be written as a sum of positive squares in only one way, i.e., 39589264 + 3062500 = 6292^2 + 1750^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42651761) 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 as a sum of consecutive naturals, namely, 5331467 + ... + 5331474.

It is an arithmetic number, because the mean of its divisors is an integer number (12440099).

Almost surely, 2^42651764 is an apocalyptic number.

It is an amenable number.

42651764 is a deficient number, since it is larger than the sum of its proper divisors (31988830).

42651764 is a wasteful number, since it uses less digits than its factorization.

42651764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10662945 (or 10662943 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 42651764 is about 6530.8318000083. The cubic root of 42651764 is about 349.3914977867.

The spelling of 42651764 in words is "forty-two million, six hundred fifty-one thousand, seven hundred sixty-four".