42145553 has 8 divisors (see below), whose sum is σ = 45563520. Its totient is φ = 38847600.

The previous prime is 42145549. The next prime is 42145561. The reversal of 42145553 is 35554124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42145553 - 2² = 42145549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42145513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29273 + ... + 30678.

It is an arithmetic number, because the mean of its divisors is an integer number (5695440).

Almost surely, 2^42145553 is an apocalyptic number.

It is an amenable number.

42145553 is a deficient number, since it is larger than the sum of its proper divisors (3417967).

42145553 is a wasteful number, since it uses less digits than its factorization.

42145553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60007.

The product of its digits is 12000, while the sum is 29.

The square root of 42145553 is about 6491.9606437501. The cubic root of 42145553 is about 348.0037460512.

Adding to 42145553 its reverse (35554124), we get a palindrome (77699677).

The spelling of 42145553 in words is "forty-two million, one hundred forty-five thousand, five hundred fifty-three".