142040777 has 4 divisors (see below), whose sum is σ = 142581120. Its totient is φ = 141500436.

The previous prime is 142040749. The next prime is 142040783. The reversal of 142040777 is 777040241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 777040241 = 41 ⋅18952201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142040777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142040677) 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, 269777 + ... + 270302.

It is an arithmetic number, because the mean of its divisors is an integer number (35645280).

Almost surely, 2^142040777 is an apocalyptic number.

It is an amenable number.

142040777 is a deficient number, since it is larger than the sum of its proper divisors (540343).

142040777 is an equidigital number, since it uses as much as digits as its factorization.

142040777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540342.

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 142040777 is about 11918.0861299120. The cubic root of 142040777 is about 521.7602783053.

The spelling of 142040777 in words is "one hundred forty-two million, forty thousand, seven hundred seventy-seven".