71077542 has 16 divisors (see below), whose sum is σ = 142242672. Its totient is φ = 23677920.

The previous prime is 71077541. The next prime is 71077547. The reversal of 71077542 is 24577017.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71077541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12192 + ... + 17052.

It is an arithmetic number, because the mean of its divisors is an integer number (8890167).

Almost surely, 2^71077542 is an apocalyptic number.

71077542 is an abundant number, since it is smaller than the sum of its proper divisors (71165130).

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

71077542 is a wasteful number, since it uses less digits than its factorization.

71077542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7303.

The product of its (nonzero) digits is 13720, while the sum is 33.

The square root of 71077542 is about 8430.7497887199. The cubic root of 71077542 is about 414.2324653038.

The spelling of 71077542 in words is "seventy-one million, seventy-seven thousand, five hundred forty-two".