42742070 has 32 divisors (see below), whose sum is σ = 88216128. Its totient is φ = 14606208.

The previous prime is 42742069. The next prime is 42742079. The reversal of 42742070 is 7024724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42742079) 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, 25292 + ... + 26928.

It is an arithmetic number, because the mean of its divisors is an integer number (2756754).

Almost surely, 2^42742070 is an apocalyptic number.

42742070 is an abundant number, since it is smaller than the sum of its proper divisors (45474058).

42742070 is a wasteful number, since it uses less digits than its factorization.

42742070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024.

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 42742070 is about 6537.7419649295. The cubic root of 42742070 is about 349.6379112484.

Adding to 42742070 its reverse (7024724), we get a palindrome (49766794).

The spelling of 42742070 in words is "forty-two million, seven hundred forty-two thousand, seventy".