71429290 has 8 divisors (see below), whose sum is σ = 128572740. Its totient is φ = 28571712.

The previous prime is 71429287. The next prime is 71429299. The reversal of 71429290 is 9292417.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 70509609 + 919681 = 8397^2 + 959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (71429299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3571455 + ... + 3571474.

Almost surely, 2^71429290 is an apocalyptic number.

71429290 is a deficient number, since it is larger than the sum of its proper divisors (57143450).

71429290 is a wasteful number, since it uses less digits than its factorization.

71429290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7142936.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 71429290 is about 8451.5850584373. The cubic root of 71429290 is about 414.9146580209.

The spelling of 71429290 in words is "seventy-one million, four hundred twenty-nine thousand, two hundred ninety".