1226540402 has 8 divisors (see below), whose sum is σ = 1936642800. Its totient is φ = 580992804.

The previous prime is 1226540387. The next prime is 1226540431. The reversal of 1226540402 is 2040456221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16138652 + ... + 16138727.

It is an arithmetic number, because the mean of its divisors is an integer number (242080350).

Almost surely, 2^1226540402 is an apocalyptic number.

1226540402 is a deficient number, since it is larger than the sum of its proper divisors (710102398).

1226540402 is a wasteful number, since it uses less digits than its factorization.

1226540402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32277400.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1226540402 is about 35021.9988293073. The cubic root of 1226540402 is about 1070.4357854571.

Adding to 1226540402 its reverse (2040456221), we get a palindrome (3266996623).

The spelling of 1226540402 in words is "one billion, two hundred twenty-six million, five hundred forty thousand, four hundred two".