42980769 has 12 divisors (see below), whose sum is σ = 66859156. Its totient is φ = 26449632.

The previous prime is 42980761. The next prime is 42980801. The reversal of 42980769 is 96708924.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29030544 + 13950225 = 5388^2 + 3735^2 .

It is not a de Polignac number, because 42980769 - 2³ = 42980761 is a prime.

It is a super-2 number, since 2×42980769² = 3694693007662722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42980761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183562 + ... + 183795.

Almost surely, 2^42980769 is an apocalyptic number.

It is an amenable number.

42980769 is a deficient number, since it is larger than the sum of its proper divisors (23878387).

42980769 is a wasteful number, since it uses less digits than its factorization.

42980769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367376 (or 367373 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 42980769 is about 6555.9720103124. The cubic root of 42980769 is about 350.2875704615.

The spelling of 42980769 in words is "forty-two million, nine hundred eighty thousand, seven hundred sixty-nine".