42954381 has 24 divisors (see below), whose sum is σ = 65729664. Its totient is φ = 28019520.

The previous prime is 42954367. The next prime is 42954389. The reversal of 42954381 is 18345924.

It is not a de Polignac number, because 42954381 - 2¹⁴ = 42937997 is a prime.

It is a super-2 number, since 2×42954381² = 3690157694186322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42954389) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9541 + ... + 13301.

It is an arithmetic number, because the mean of its divisors is an integer number (2738736).

Almost surely, 2^42954381 is an apocalyptic number.

It is an amenable number.

42954381 is a deficient number, since it is larger than the sum of its proper divisors (22775283).

42954381 is an equidigital number, since it uses as much as digits as its factorization.

42954381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3823 (or 3811 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 42954381 is about 6553.9591851033. The cubic root of 42954381 is about 350.2158695518.

The spelling of 42954381 in words is "forty-two million, nine hundred fifty-four thousand, three hundred eighty-one".