1254661402 has 8 divisors (see below), whose sum is σ = 1882487700. Its totient is φ = 627165504.

The previous prime is 1254661361. The next prime is 1254661403. The reversal of 1254661402 is 2041664521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1254647241 + 14161 = 35421^2 + 119^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1254661403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72877 + ... + 88432.

Almost surely, 2^1254661402 is an apocalyptic number.

1254661402 is a deficient number, since it is larger than the sum of its proper divisors (627826298).

1254661402 is a wasteful number, since it uses less digits than its factorization.

1254661402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165200.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1254661402 is about 35421.1998949781. The cubic root of 1254661402 is about 1078.5547088166.

The spelling of 1254661402 in words is "one billion, two hundred fifty-four million, six hundred sixty-one thousand, four hundred two".