71122940 has 24 divisors (see below), whose sum is σ = 170695392. Its totient is φ = 24384960.

The previous prime is 71122937. The next prime is 71122943. The reversal of 71122940 is 4922117.

It is an interprime number because it is at equal distance from previous prime (71122937) and next prime (71122943).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71122943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253871 + ... + 254150.

It is an arithmetic number, because the mean of its divisors is an integer number (7112308).

Almost surely, 2^71122940 is an apocalyptic number.

71122940 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71122940 is an abundant number, since it is smaller than the sum of its proper divisors (99572452).

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

71122940 is a wasteful number, since it uses less digits than its factorization.

71122940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508037 (or 508035 counting only the distinct ones).

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

The square root of 71122940 is about 8433.4417647838. The cubic root of 71122940 is about 414.3206381294.

The spelling of 71122940 in words is "seventy-one million, one hundred twenty-two thousand, nine hundred forty".