40743554 has 4 divisors (see below), whose sum is σ = 61115334. Its totient is φ = 20371776.

The previous prime is 40743553. The next prime is 40743559. The reversal of 40743554 is 45534704.

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

It can be written as a sum of positive squares in only one way, i.e., 37761025 + 2982529 = 6145^2 + 1727^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40743554.

It is not an unprimeable number, because it can be changed into a prime (40743553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10185887 + ... + 10185890.

Almost surely, 2^40743554 is an apocalyptic number.

40743554 is a deficient number, since it is larger than the sum of its proper divisors (20371780).

40743554 is a wasteful number, since it uses less digits than its factorization.

40743554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20371779.

The product of its (nonzero) digits is 33600, while the sum is 32.

The square root of 40743554 is about 6383.0677577478. The cubic root of 40743554 is about 344.1012918317.

The spelling of 40743554 in words is "forty million, seven hundred forty-three thousand, five hundred fifty-four".