1201426263 has 32 divisors (see below), whose sum is σ = 1832601600. Its totient is φ = 787290840.

The previous prime is 1201426253. The next prime is 1201426279. The reversal of 1201426263 is 3626241021.

1201426263 is a `hidden beast` number, since 1 + 20 + 14 + 2 + 626 + 3 = 666.

It is not a de Polignac number, because 1201426263 - 2¹⁴ = 1201409879 is a prime.

It is a super-2 number, since 2×1201426263² = 2886850130852290338, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201426243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124378 + ... + 133688.

It is an arithmetic number, because the mean of its divisors is an integer number (57268800).

Almost surely, 2^1201426263 is an apocalyptic number.

1201426263 is a deficient number, since it is larger than the sum of its proper divisors (631175337).

1201426263 is an frugal number, since it uses more digits than its factorization.

1201426263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9391 (or 9373 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1201426263 is about 34661.5963712002. The cubic root of 1201426263 is about 1063.0794109954.

Adding to 1201426263 its reverse (3626241021), we get a palindrome (4827667284).

The spelling of 1201426263 in words is "one billion, two hundred one million, four hundred twenty-six thousand, two hundred sixty-three".