42053428 has 12 divisors (see below), whose sum is σ = 73830820. Its totient is φ = 20958912.

The previous prime is 42053419. The next prime is 42053443. The reversal of 42053428 is 82435024.

It can be written as a sum of positive squares in 2 ways, for example, as 20412324 + 21641104 = 4518^2 + 4652^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42053396 and 42053405.

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, 15543 + ... + 18046.

Almost surely, 2^42053428 is an apocalyptic number.

It is an amenable number.

42053428 is a deficient number, since it is larger than the sum of its proper divisors (31777392).

42053428 is a wasteful number, since it uses less digits than its factorization.

42053428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33906 (or 33904 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 42053428 is about 6484.8614480188. The cubic root of 42053428 is about 347.7499965976.

The spelling of 42053428 in words is "forty-two million, fifty-three thousand, four hundred twenty-eight".