42948191 has 16 divisors (see below), whose sum is σ = 50712480. Its totient is φ = 35857920.

The previous prime is 42948133. The next prime is 42948193. The reversal of 42948191 is 19184924.

It is a cyclic number.

It is not a de Polignac number, because 42948191 - 2¹⁰ = 42947167 is a prime.

It is a super-2 number, since 2×42948191² = 3689094220344962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42948193) 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, 32675 + ... + 33963.

It is an arithmetic number, because the mean of its divisors is an integer number (3169530).

Almost surely, 2^42948191 is an apocalyptic number.

42948191 is a deficient number, since it is larger than the sum of its proper divisors (7764289).

42948191 is a wasteful number, since it uses less digits than its factorization.

42948191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546.

The product of its digits is 20736, while the sum is 38.

The square root of 42948191 is about 6553.4869344495. The cubic root of 42948191 is about 350.1990459642.

The spelling of 42948191 in words is "forty-two million, nine hundred forty-eight thousand, one hundred ninety-one".