42103155 has 16 divisors (see below), whose sum is σ = 67497120. Its totient is φ = 22411008.

The previous prime is 42103153. The next prime is 42103189. The reversal of 42103155 is 55130124.

It is not a de Polignac number, because 42103155 - 2¹ = 42103153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42103153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6069 + ... + 11001.

It is an arithmetic number, because the mean of its divisors is an integer number (4218570).

Almost surely, 2^42103155 is an apocalyptic number.

42103155 is a deficient number, since it is larger than the sum of its proper divisors (25393965).

42103155 is a wasteful number, since it uses less digits than its factorization.

42103155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5510.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 42103155 is about 6488.6943987215. The cubic root of 42103155 is about 347.8870108148.

Adding to 42103155 its reverse (55130124), we get a palindrome (97233279).

The spelling of 42103155 in words is "forty-two million, one hundred three thousand, one hundred fifty-five".