42051355 has 4 divisors (see below), whose sum is σ = 50461632. Its totient is φ = 33641080.

The previous prime is 42051349. The next prime is 42051391. The reversal of 42051355 is 55315024.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-42051355 is a prime.

It is a Duffinian 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, 4205131 + ... + 4205140.

It is an arithmetic number, because the mean of its divisors is an integer number (12615408).

Almost surely, 2^42051355 is an apocalyptic number.

42051355 is a deficient number, since it is larger than the sum of its proper divisors (8410277).

42051355 is an equidigital number, since it uses as much as digits as its factorization.

42051355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8410276.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 42051355 is about 6484.7016122563. The cubic root of 42051355 is about 347.7442824570.

Adding to 42051355 its reverse (55315024), we get a palindrome (97366379).

The spelling of 42051355 in words is "forty-two million, fifty-one thousand, three hundred fifty-five".