1242130401 has 6 divisors (see below), whose sum is σ = 1794188370. Its totient is φ = 828086928.

The previous prime is 1242130391. The next prime is 1242130411. The reversal of 1242130401 is 1040312421.

It is an interprime number because it is at equal distance from previous prime (1242130391) and next prime (1242130411).

It can be written as a sum of positive squares in only one way, i.e., 908118225 + 334012176 = 30135^2 + 18276^2 .

It is not a de Polignac number, because 1242130401 - 2⁷ = 1242130273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242130411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69007236 + ... + 69007253.

It is an arithmetic number, because the mean of its divisors is an integer number (299031395).

Almost surely, 2^1242130401 is an apocalyptic number.

It is an amenable number.

1242130401 is a deficient number, since it is larger than the sum of its proper divisors (552057969).

1242130401 is a wasteful number, since it uses less digits than its factorization.

1242130401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138014495 (or 138014492 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1242130401 is about 35243.8704032347. The cubic root of 1242130401 is about 1074.9519793945.

Adding to 1242130401 its reverse (1040312421), we get a palindrome (2282442822).

The spelling of 1242130401 in words is "one billion, two hundred forty-two million, one hundred thirty thousand, four hundred one".