1210842480 has 80 divisors (see below), whose sum is σ = 3801185280. Its totient is φ = 318799104.

The previous prime is 1210842473. The next prime is 1210842487. The reversal of 1210842480 is 842480121.

It is an interprime number because it is at equal distance from previous prime (1210842473) and next prime (1210842487).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1210842480² = 2932279022745100800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210842487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12972 + ... + 50891.

It is an arithmetic number, because the mean of its divisors is an integer number (47514816).

Almost surely, 2^1210842480 is an apocalyptic number.

1210842480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210842480 is an abundant number, since it is smaller than the sum of its proper divisors (2590342800).

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

1210842480 is a wasteful number, since it uses less digits than its factorization.

1210842480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63958 (or 63952 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 1210842480 is about 34797.1619532398. The cubic root of 1210842480 is about 1065.8494930466.

The spelling of 1210842480 in words is "one billion, two hundred ten million, eight hundred forty-two thousand, four hundred eighty".