248102421 has 32 divisors (see below), whose sum is σ = 383877120. Its totient is φ = 139610304.

The previous prime is 248102419. The next prime is 248102431. The reversal of 248102421 is 124201842.

It is not a de Polignac number, because 248102421 - 2¹ = 248102419 is a prime.

It is a super-2 number, since 2×248102421² = 123109622612122482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 248102391 and 248102400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248102401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 647596 + ... + 647978.

It is an arithmetic number, because the mean of its divisors is an integer number (11996160).

Almost surely, 2^248102421 is an apocalyptic number.

248102421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

248102421 is a deficient number, since it is larger than the sum of its proper divisors (135774699).

248102421 is a wasteful number, since it uses less digits than its factorization.

248102421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785.

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 248102421 is about 15751.2672823491. The cubic root of 248102421 is about 628.3626087218.

The spelling of 248102421 in words is "two hundred forty-eight million, one hundred two thousand, four hundred twenty-one".