1242940510 has 16 divisors (see below), whose sum is σ = 2556906336. Its totient is φ = 426151008.

The previous prime is 1242940507. The next prime is 1242940513. The reversal of 1242940510 is 150492421.

It is an interprime number because it is at equal distance from previous prime (1242940507) and next prime (1242940513).

It is a super-2 number, since 2×1242940510² = 3089802222798120200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242940513) 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, 8878077 + ... + 8878216.

It is an arithmetic number, because the mean of its divisors is an integer number (159806646).

Almost surely, 2^1242940510 is an apocalyptic number.

1242940510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242940510 is an abundant number, since it is smaller than the sum of its proper divisors (1313965826).

1242940510 is a wasteful number, since it uses less digits than its factorization.

1242940510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17756307.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1242940510 is about 35255.3614362412. The cubic root of 1242940510 is about 1075.1856207322.

The spelling of 1242940510 in words is "one billion, two hundred forty-two million, nine hundred forty thousand, five hundred ten".