42141381 has 8 divisors (see below), whose sum is σ = 56369280. Its totient is φ = 28003872.

The previous prime is 42141377. The next prime is 42141383. The reversal of 42141381 is 18314124.

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

It is not a de Polignac number, because 42141381 - 2² = 42141377 is a prime.

It is a super-2 number, since 2×42141381² = 3551791985174322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42141383) 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, 21501 + ... + 23378.

It is an arithmetic number, because the mean of its divisors is an integer number (7046160).

Almost surely, 2^42141381 is an apocalyptic number.

It is an amenable number.

42141381 is a deficient number, since it is larger than the sum of its proper divisors (14227899).

42141381 is a wasteful number, since it uses less digits than its factorization.

42141381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45195.

The product of its digits is 768, while the sum is 24.

The square root of 42141381 is about 6491.6393153040. The cubic root of 42141381 is about 347.9922626764.

It can be divided in two parts, 421413 and 81, that multiplied together give a triangular number (34134453 = T₈₂₆₂).

The spelling of 42141381 in words is "forty-two million, one hundred forty-one thousand, three hundred eighty-one".