1242416537 has 2 divisors, whose sum is σ = 1242416538. Its totient is φ = 1242416536.

The previous prime is 1242416533. The next prime is 1242416557. The reversal of 1242416537 is 7356142421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 814588681 + 427827856 = 28541^2 + 20684^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242416537 - 2² = 1242416533 is a prime.

It is a super-2 number, since 2×1242416537² = 3087197702822144738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1242416497 and 1242416506.

It is not a weakly prime, because it can be changed into another prime (1242416533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621208268 + 621208269.

It is an arithmetic number, because the mean of its divisors is an integer number (621208269).

Almost surely, 2^1242416537 is an apocalyptic number.

It is an amenable number.

1242416537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242416537 is an equidigital number, since it uses as much as digits as its factorization.

1242416537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 35.

The square root of 1242416537 is about 35247.9295420313. The cubic root of 1242416537 is about 1075.0345147022.

Adding to 1242416537 its reverse (7356142421), we get a palindrome (8598558958).

The spelling of 1242416537 in words is "one billion, two hundred forty-two million, four hundred sixteen thousand, five hundred thirty-seven".