42420776 has 16 divisors (see below), whose sum is σ = 81040500. Its totient is φ = 20809984.

The previous prime is 42420769. The next prime is 42420793. The reversal of 42420776 is 67702424.

It can be written as a sum of positive squares in 2 ways, for example, as 40018276 + 2402500 = 6326^2 + 1550^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49601 + ... + 50448.

Almost surely, 2^42420776 is an apocalyptic number.

It is an amenable number.

42420776 is a deficient number, since it is larger than the sum of its proper divisors (38619724).

42420776 is a wasteful number, since it uses less digits than its factorization.

42420776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100108 (or 100104 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 42420776 is about 6513.1233674789. The cubic root of 42420776 is about 348.7596257241.

It can be divided in two parts, 424 and 20776, that multiplied together give a square (8809024 = 2968²).

The spelling of 42420776 in words is "forty-two million, four hundred twenty thousand, seven hundred seventy-six".