40135751 has 4 divisors (see below), whose sum is σ = 40150032. Its totient is φ = 40121472.

The previous prime is 40135741. The next prime is 40135769. The reversal of 40135751 is 15753104.

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

It is a cyclic number.

It is not a de Polignac number, because 40135751 - 2¹⁴ = 40119367 is a prime.

It is a super-2 number, since 2×40135751² = 3221757016668002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40135751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40135741) 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, 1370 + ... + 9063.

It is an arithmetic number, because the mean of its divisors is an integer number (10037508).

Almost surely, 2^40135751 is an apocalyptic number.

40135751 is a deficient number, since it is larger than the sum of its proper divisors (14281).

40135751 is a wasteful number, since it uses less digits than its factorization.

40135751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14280.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 40135751 is about 6335.2782890730. The cubic root of 40135751 is about 342.3816373998.

Adding to 40135751 its reverse (15753104), we get a palindrome (55888855).

The spelling of 40135751 in words is "forty million, one hundred thirty-five thousand, seven hundred fifty-one".