42203155 has 8 divisors (see below), whose sum is σ = 51474384. Its totient is φ = 33208800.

The previous prime is 42203131. The next prime is 42203171. The reversal of 42203155 is 55130224.

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

It is not a de Polignac number, because 42203155 - 2¹⁹ = 41678867 is a prime.

It is a super-2 number, since 2×42203155² = 3562212583908050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68881 + ... + 69490.

It is an arithmetic number, because the mean of its divisors is an integer number (6434298).

Almost surely, 2^42203155 is an apocalyptic number.

42203155 is a deficient number, since it is larger than the sum of its proper divisors (9271229).

42203155 is a wasteful number, since it uses less digits than its factorization.

42203155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138437.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 42203155 is about 6496.3955390663. The cubic root of 42203155 is about 348.1622173873.

Adding to 42203155 its reverse (55130224), we get a palindrome (97333379).

The spelling of 42203155 in words is "forty-two million, two hundred three thousand, one hundred fifty-five".