71400429 has 12 divisors (see below), whose sum is σ = 103369500. Its totient is φ = 47491584.

The previous prime is 71400421. The next prime is 71400431. The reversal of 71400429 is 92400417.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28196100 + 43204329 = 5310^2 + 6573^2 .

It is not a de Polignac number, because 71400429 - 2³ = 71400421 is a prime.

It is a super-2 number, since 2×71400429² = 10196042522768082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71400421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4794 + ... + 12875.

It is an arithmetic number, because the mean of its divisors is an integer number (8614125).

Almost surely, 2^71400429 is an apocalyptic number.

It is an amenable number.

71400429 is a deficient number, since it is larger than the sum of its proper divisors (31969071).

71400429 is a wasteful number, since it uses less digits than its factorization.

71400429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18124 (or 18121 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 71400429 is about 8449.8774547327. The cubic root of 71400429 is about 414.8587684126.

The spelling of 71400429 in words is "seventy-one million, four hundred thousand, four hundred twenty-nine".