1400245261 has 8 divisors (see below), whose sum is σ = 1495942880. Its totient is φ = 1306747728.

The previous prime is 1400245247. The next prime is 1400245303. The reversal of 1400245261 is 1625420041.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1400245261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400245361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548706 + ... + 551251.

It is an arithmetic number, because the mean of its divisors is an integer number (186992860).

Almost surely, 2^1400245261 is an apocalyptic number.

It is an amenable number.

1400245261 is a deficient number, since it is larger than the sum of its proper divisors (95697619).

1400245261 is a wasteful number, since it uses less digits than its factorization.

1400245261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100043.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1400245261 is about 37419.8511621840. The cubic root of 1400245261 is about 1118.7542646405.

The spelling of 1400245261 in words is "one billion, four hundred million, two hundred forty-five thousand, two hundred sixty-one".