49428121 has 8 divisors (see below), whose sum is σ = 50335560. Its totient is φ = 48529152.

The previous prime is 49428109. The next prime is 49428131. The reversal of 49428121 is 12182494.

It can be written as a sum of positive squares in 4 ways, for example, as 5934096 + 43494025 = 2436^2 + 6595^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 49428121 - 2⁵ = 49428089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49428131) 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, 10311 + ... + 14323.

It is an arithmetic number, because the mean of its divisors is an integer number (6291945).

Almost surely, 2^49428121 is an apocalyptic number.

It is an amenable number.

49428121 is a deficient number, since it is larger than the sum of its proper divisors (907439).

49428121 is a wasteful number, since it uses less digits than its factorization.

49428121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4235.

The product of its digits is 4608, while the sum is 31.

The square root of 49428121 is about 7030.5135658784. The cubic root of 49428121 is about 366.9932138712.

The spelling of 49428121 in words is "forty-nine million, four hundred twenty-eight thousand, one hundred twenty-one".