77201142 has 32 divisors (see below), whose sum is σ = 164073600. Its totient is φ = 24147648.

The previous prime is 77201101. The next prime is 77201143. The reversal of 77201142 is 24110277.

It is a super-2 number, since 2×77201142² = 11920032652208328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77201143) 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, 9034 + ... + 15362.

It is an arithmetic number, because the mean of its divisors is an integer number (5127300).

Almost surely, 2^77201142 is an apocalyptic number.

77201142 is an abundant number, since it is smaller than the sum of its proper divisors (86872458).

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

77201142 is a wasteful number, since it uses less digits than its factorization.

77201142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6460.

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 77201142 is about 8786.4180415002. The cubic root of 77201142 is about 425.8022071050.

The spelling of 77201142 in words is "seventy-seven million, two hundred one thousand, one hundred forty-two".