42650789 has 2 divisors, whose sum is σ = 42650790. Its totient is φ = 42650788.

The previous prime is 42650779. The next prime is 42650831. The reversal of 42650789 is 98705624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30713764 + 11937025 = 5542^2 + 3455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42650789 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42650759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21325394 + 21325395.

It is an arithmetic number, because the mean of its divisors is an integer number (21325395).

Almost surely, 2^42650789 is an apocalyptic number.

It is an amenable number.

42650789 is a deficient number, since it is larger than the sum of its proper divisors (1).

42650789 is an equidigital number, since it uses as much as digits as its factorization.

42650789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 42650789 is about 6530.7571536538. The cubic root of 42650789 is about 349.3888354560.

It can be divided in two parts, 426 and 50789, that added together give a palindrome (51215).

The spelling of 42650789 in words is "forty-two million, six hundred fifty thousand, seven hundred eighty-nine".