1240261550 has 24 divisors (see below), whose sum is σ = 2516604552. Its totient is φ = 451004000.

The previous prime is 1240261523. The next prime is 1240261567. The reversal of 1240261550 is 551620421.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1126961 + ... + 1128060.

It is an arithmetic number, because the mean of its divisors is an integer number (104858523).

Almost surely, 2^1240261550 is an apocalyptic number.

1240261550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1240261550 is an abundant number, since it is smaller than the sum of its proper divisors (1276343002).

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

1240261550 is a wasteful number, since it uses less digits than its factorization.

1240261550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255044 (or 2255039 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1240261550 is about 35217.3472879489. The cubic root of 1240261550 is about 1074.4126013940.

Adding to 1240261550 its reverse (551620421), we get a palindrome (1791881971).

The spelling of 1240261550 in words is "one billion, two hundred forty million, two hundred sixty-one thousand, five hundred fifty".