71642050 has 12 divisors (see below), whose sum is σ = 133254306. Its totient is φ = 28656800.

The previous prime is 71642017. The next prime is 71642057. The reversal of 71642050 is 5024617.

It can be written as a sum of positive squares in 3 ways, for example, as 37173409 + 34468641 = 6097^2 + 5871^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (71642057) 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 5 ways as a sum of consecutive naturals, for example, 716371 + ... + 716470.

Almost surely, 2^71642050 is an apocalyptic number.

71642050 is a deficient number, since it is larger than the sum of its proper divisors (61612256).

71642050 is a wasteful number, since it uses less digits than its factorization.

71642050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432853 (or 1432848 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 71642050 is about 8464.1626874724. The cubic root of 71642050 is about 415.3262059987.

71642050 divided by its sum of digits (25) gives a palindrome (2865682).

Adding to 71642050 its reverse (5024617), we get a palindrome (76666667).

The spelling of 71642050 in words is "seventy-one million, six hundred forty-two thousand, fifty".