71490122 has 16 divisors (see below), whose sum is σ = 123141600. Its totient is φ = 30785040.

The previous prime is 71490079. The next prime is 71490127. The reversal of 71490122 is 22109417.

It is a super-2 number, since 2×71490122² = 10221675087149768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71490091 and 71490100.

It is not an unprimeable number, because it can be changed into a prime (71490127) 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 7 ways as a sum of consecutive naturals, for example, 85097 + ... + 85932.

It is an arithmetic number, because the mean of its divisors is an integer number (7696350).

Almost surely, 2^71490122 is an apocalyptic number.

71490122 is a deficient number, since it is larger than the sum of its proper divisors (51651478).

71490122 is a wasteful number, since it uses less digits than its factorization.

71490122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171061.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 71490122 is about 8455.1831440839. The cubic root of 71490122 is about 415.0324104943.

Adding to 71490122 its reverse (22109417), we get a palindrome (93599539).

The spelling of 71490122 in words is "seventy-one million, four hundred ninety thousand, one hundred twenty-two".