71442402 has 32 divisors (see below), whose sum is σ = 145115712. Its totient is φ = 23445504.

The previous prime is 71442389. The next prime is 71442403. The reversal of 71442402 is 20424417.

It is not an unprimeable number, because it can be changed into a prime (71442403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164778 + ... + 165210.

It is an arithmetic number, because the mean of its divisors is an integer number (4534866).

Almost surely, 2^71442402 is an apocalyptic number.

71442402 is an abundant number, since it is smaller than the sum of its proper divisors (73673310).

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

71442402 is a wasteful number, since it uses less digits than its factorization.

71442402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 71442402 is about 8452.3607353212. The cubic root of 71442402 is about 414.9400445635.

Adding to 71442402 its reverse (20424417), we get a palindrome (91866819).

The spelling of 71442402 in words is "seventy-one million, four hundred forty-two thousand, four hundred two".