42991454 has 8 divisors (see below), whose sum is σ = 70349688. Its totient is φ = 19541560.

The previous prime is 42991441. The next prime is 42991463. The reversal of 42991454 is 45419924.

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

It is a super-3 number, since 3×42991454³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 977057 + ... + 977100.

It is an arithmetic number, because the mean of its divisors is an integer number (8793711).

Almost surely, 2^42991454 is an apocalyptic number.

42991454 is a deficient number, since it is larger than the sum of its proper divisors (27358234).

42991454 is a wasteful number, since it uses less digits than its factorization.

42991454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954170.

The product of its digits is 51840, while the sum is 38.

The square root of 42991454 is about 6556.7868655310. The cubic root of 42991454 is about 350.3165951677.

The spelling of 42991454 in words is "forty-two million, nine hundred ninety-one thousand, four hundred fifty-four".