1242623271 has 16 divisors (see below), whose sum is σ = 1700978688. Its totient is φ = 806527200.

The previous prime is 1242623257. The next prime is 1242623293. The reversal of 1242623271 is 1723262421.

It is not a de Polignac number, because 1242623271 - 2¹⁴ = 1242606887 is a prime.

It is a super-2 number, since 2×1242623271² = 3088225187261478882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242623171) 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, 3861 + ... + 50001.

It is an arithmetic number, because the mean of its divisors is an integer number (106311168).

Almost surely, 2^1242623271 is an apocalyptic number.

1242623271 is a deficient number, since it is larger than the sum of its proper divisors (458355417).

1242623271 is a wasteful number, since it uses less digits than its factorization.

1242623271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46382.

The product of its digits is 8064, while the sum is 30.

The square root of 1242623271 is about 35250.8619894606. The cubic root of 1242623271 is about 1075.0941387904.

Adding to 1242623271 its reverse (1723262421), we get a palindrome (2965885692).

The spelling of 1242623271 in words is "one billion, two hundred forty-two million, six hundred twenty-three thousand, two hundred seventy-one".