42690428 has 12 divisors (see below), whose sum is σ = 81499992. Its totient is φ = 19404720.

The previous prime is 42690413. The next prime is 42690449. The reversal of 42690428 is 82409624.

It is a congruent number.

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, 485075 + ... + 485162.

It is an arithmetic number, because the mean of its divisors is an integer number (6791666).

Almost surely, 2^42690428 is an apocalyptic number.

It is an amenable number.

42690428 is a deficient number, since it is larger than the sum of its proper divisors (38809564).

42690428 is a wasteful number, since it uses less digits than its factorization.

42690428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970252 (or 970250 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 42690428 is about 6533.7912424564. The cubic root of 42690428 is about 349.4970408461.

It can be divided in two parts, 4269042 and 8, that multiplied together give a square (34152336 = 5844²).

The spelling of 42690428 in words is "forty-two million, six hundred ninety thousand, four hundred twenty-eight".