71442450 has 36 divisors (see below), whose sum is σ = 191943258. Its totient is φ = 19051200.

The previous prime is 71442431. The next prime is 71442461. The reversal of 71442450 is 5424417.

It can be written as a sum of positive squares in 3 ways, for example, as 34609689 + 36832761 = 5883^2 + 6069^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 78931 + ... + 79830.

Almost surely, 2^71442450 is an apocalyptic number.

71442450 is an abundant number, since it is smaller than the sum of its proper divisors (120500808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71442450 is a wasteful number, since it uses less digits than its factorization.

71442450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158779 (or 158771 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 71442450 is about 8452.3635747642. The cubic root of 71442450 is about 414.9401374921.

Adding to 71442450 its reverse (5424417), we get a palindrome (76866867).

It can be divided in two parts, 71442 and 450, that multiplied together give a square (32148900 = 5670²).

The spelling of 71442450 in words is "seventy-one million, four hundred forty-two thousand, four hundred fifty".