1254131421 has 24 divisors (see below), whose sum is σ = 1744460256. Its totient is φ = 801003840.

The previous prime is 1254131413. The next prime is 1254131453. The reversal of 1254131421 is 1241314521.

It is not a de Polignac number, because 1254131421 - 2³ = 1254131413 is a prime.

It is a super-2 number, since 2×1254131421² = 3145691242278958482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1254131391 and 1254131400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254131401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 360631 + ... + 364091.

It is an arithmetic number, because the mean of its divisors is an integer number (72685844).

Almost surely, 2^1254131421 is an apocalyptic number.

It is an amenable number.

1254131421 is a deficient number, since it is larger than the sum of its proper divisors (490328835).

1254131421 is an equidigital number, since it uses as much as digits as its factorization.

1254131421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3613 (or 3560 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 1254131421 is about 35413.7179776425. The cubic root of 1254131421 is about 1078.4028234803.

Adding to 1254131421 its reverse (1241314521), we get a palindrome (2495445942).

The spelling of 1254131421 in words is "one billion, two hundred fifty-four million, one hundred thirty-one thousand, four hundred twenty-one".