42761389 has 4 divisors (see below), whose sum is σ = 46648800. Its totient is φ = 38873980.

The previous prime is 42761387. The next prime is 42761417. The reversal of 42761389 is 98316724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42761389 - 2¹ = 42761387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42761387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1943689 + ... + 1943710.

It is an arithmetic number, because the mean of its divisors is an integer number (11662200).

Almost surely, 2^42761389 is an apocalyptic number.

It is an amenable number.

42761389 is a deficient number, since it is larger than the sum of its proper divisors (3887411).

42761389 is a wasteful number, since it uses less digits than its factorization.

42761389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3887410.

The product of its digits is 72576, while the sum is 40.

The square root of 42761389 is about 6539.2192959099. The cubic root of 42761389 is about 349.6905809591.

It can be divided in two parts, 4276 and 1389, that added together give a palindrome (5665).

The spelling of 42761389 in words is "forty-two million, seven hundred sixty-one thousand, three hundred eighty-nine".