49121121 has 8 divisors (see below), whose sum is σ = 74851264. Its totient is φ = 28069200.

The previous prime is 49121119. The next prime is 49121129. The reversal of 49121121 is 12112194.

It is a happy number.

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

It is not a de Polignac number, because 49121121 - 2¹ = 49121119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2339101 = 49121121 / (4 + 9 + 1 + 2 + 1 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49121129) 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, 1169530 + ... + 1169571.

It is an arithmetic number, because the mean of its divisors is an integer number (9356408).

Almost surely, 2^49121121 is an apocalyptic number.

It is an amenable number.

49121121 is a deficient number, since it is larger than the sum of its proper divisors (25730143).

49121121 is a wasteful number, since it uses less digits than its factorization.

49121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339111.

The product of its digits is 144, while the sum is 21.

The square root of 49121121 is about 7008.6461602795. The cubic root of 49121121 is about 366.2318322788.

It can be divided in two parts, 491 and 21121, that added together give a palindrome (21612).

The spelling of 49121121 in words is "forty-nine million, one hundred twenty-one thousand, one hundred twenty-one".