1261352454 has 32 divisors (see below), whose sum is σ = 2644354944. Its totient is φ = 400653120.

The previous prime is 1261352441. The next prime is 1261352467. The reversal of 1261352454 is 4542531621.

It is an interprime number because it is at equal distance from previous prime (1261352441) and next prime (1261352467).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49044 + ... + 70199.

It is an arithmetic number, because the mean of its divisors is an integer number (82636092).

Almost surely, 2^1261352454 is an apocalyptic number.

1261352454 is an abundant number, since it is smaller than the sum of its proper divisors (1383002490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1261352454 is a wasteful number, since it uses less digits than its factorization.

1261352454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119332.

The product of its digits is 28800, while the sum is 33.

The square root of 1261352454 is about 35515.5241267815. The cubic root of 1261352454 is about 1080.4686049450.

The spelling of 1261352454 in words is "one billion, two hundred sixty-one million, three hundred fifty-two thousand, four hundred fifty-four".