40777742 has 4 divisors (see below), whose sum is σ = 61166616. Its totient is φ = 20388870.

The previous prime is 40777729. The next prime is 40777757. The reversal of 40777742 is 24777704.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 40777696 and 40777705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10194434 + ... + 10194437.

It is an arithmetic number, because the mean of its divisors is an integer number (15291654).

Almost surely, 2^40777742 is an apocalyptic number.

40777742 is a deficient number, since it is larger than the sum of its proper divisors (20388874).

40777742 is a wasteful number, since it uses less digits than its factorization.

40777742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20388873.

The product of its (nonzero) digits is 76832, while the sum is 38.

The square root of 40777742 is about 6385.7452188449. The cubic root of 40777742 is about 344.1975102917.

Subtracting from 40777742 its sum of digits (38), we obtain a palindrome (40777704).

The spelling of 40777742 in words is "forty million, seven hundred seventy-seven thousand, seven hundred forty-two".