43742031 has 8 divisors (see below), whose sum is σ = 58358784. Its totient is φ = 29143320.

The previous prime is 43742011. The next prime is 43742057. The reversal of 43742031 is 13024734.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43742031 - 2⁷ = 43741903 is a prime.

It is a super-2 number, since 2×43742031² = 3826730552009922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43741992 and 43742010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43742011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2880 + ... + 9786.

It is an arithmetic number, because the mean of its divisors is an integer number (7294848).

Almost surely, 2^43742031 is an apocalyptic number.

43742031 is a deficient number, since it is larger than the sum of its proper divisors (14616753).

43742031 is a wasteful number, since it uses less digits than its factorization.

43742031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9021.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 43742031 is about 6613.7758504503. The cubic root of 43742031 is about 352.3435410475.

Adding to 43742031 its reverse (13024734), we get a palindrome (56766765).

The spelling of 43742031 in words is "forty-three million, seven hundred forty-two thousand, thirty-one".