45242031 has 4 divisors (see below), whose sum is σ = 60322712. Its totient is φ = 30161352.

The previous prime is 45242011. The next prime is 45242033. The reversal of 45242031 is 13024254.

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

It is not a de Polignac number, because 45242031 - 2¹¹ = 45239983 is a prime.

It is a super-2 number, since 2×45242031² = 4093682738009922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45241989 and 45242007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45242033) 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, 7540336 + ... + 7540341.

It is an arithmetic number, because the mean of its divisors is an integer number (15080678).

Almost surely, 2^45242031 is an apocalyptic number.

45242031 is a deficient number, since it is larger than the sum of its proper divisors (15080681).

45242031 is a wasteful number, since it uses less digits than its factorization.

45242031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15080680.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 45242031 is about 6726.2196663505. The cubic root of 45242031 is about 356.3258783280.

Adding to 45242031 its reverse (13024254), we get a palindrome (58266285).

It can be divided in two parts, 4524 and 2031, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 45242031 in words is "forty-five million, two hundred forty-two thousand, thirty-one".