1248480121 has 4 divisors (see below), whose sum is σ = 1426834432. Its totient is φ = 1070125812.

The previous prime is 1248480109. The next prime is 1248480127. The reversal of 1248480121 is 1210848421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1210848421 = 37 ⋅32725633.

It is a de Polignac number, because none of the positive numbers 2^k-1248480121 is a prime.

It is a super-2 number, since 2×1248480121² = 3117405225064349282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1248480127) 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, 89177145 + ... + 89177158.

It is an arithmetic number, because the mean of its divisors is an integer number (356708608).

Almost surely, 2^1248480121 is an apocalyptic number.

It is an amenable number.

1248480121 is a deficient number, since it is larger than the sum of its proper divisors (178354311).

1248480121 is an equidigital number, since it uses as much as digits as its factorization.

1248480121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178354310.

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 1248480121 is about 35333.8381866448. The cubic root of 1248480121 is about 1076.7805706040.

The spelling of 1248480121 in words is "one billion, two hundred forty-eight million, four hundred eighty thousand, one hundred twenty-one".