42343977 has 16 divisors (see below), whose sum is σ = 61183808. Its totient is φ = 25894080.

The previous prime is 42343937. The next prime is 42343981. The reversal of 42343977 is 77934324.

It is not a de Polignac number, because 42343977 - 2⁷ = 42343849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42343907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3027 + ... + 9687.

It is an arithmetic number, because the mean of its divisors is an integer number (3823988).

Almost surely, 2^42343977 is an apocalyptic number.

It is an amenable number.

42343977 is a deficient number, since it is larger than the sum of its proper divisors (18839831).

42343977 is a wasteful number, since it uses less digits than its factorization.

42343977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6840.

The product of its digits is 127008, while the sum is 39.

The square root of 42343977 is about 6507.2249845844. The cubic root of 42343977 is about 348.5490326069.

The spelling of 42343977 in words is "forty-two million, three hundred forty-three thousand, nine hundred seventy-seven".