1251424122 has 32 divisors (see below), whose sum is σ = 2701349952. Its totient is φ = 384200064.

The previous prime is 1251424121. The next prime is 1251424123. The reversal of 1251424122 is 2214241521.

It is an interprime number because it is at equal distance from previous prime (1251424121) and next prime (1251424123).

It is a junction number, because it is equal to n+sod(n) for n = 1251424092 and 1251424101.

It is not an unprimeable number, because it can be changed into a prime (1251424121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18093 + ... + 53199.

It is an arithmetic number, because the mean of its divisors is an integer number (84417186).

Almost surely, 2^1251424122 is an apocalyptic number.

1251424122 is an abundant number, since it is smaller than the sum of its proper divisors (1449925830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1251424122 is a wasteful number, since it uses less digits than its factorization.

1251424122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35582.

The product of its digits is 1280, while the sum is 24.

The square root of 1251424122 is about 35375.4734526621. The cubic root of 1251424122 is about 1077.6262801343.

Adding to 1251424122 its reverse (2214241521), we get a palindrome (3465665643).

The spelling of 1251424122 in words is "one billion, two hundred fifty-one million, four hundred twenty-four thousand, one hundred twenty-two".