1210149720 has 384 divisors, whose sum is σ = 4492837440. Its totient is φ = 291133440.

The previous prime is 1210149701. The next prime is 1210149737. The reversal of 1210149720 is 279410121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7707882 + ... + 7708038.

Almost surely, 2^1210149720 is an apocalyptic number.

1210149720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1210149720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2246418720).

1210149720 is an abundant number, since it is smaller than the sum of its proper divisors (3282687720).

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

1210149720 is a wasteful number, since it uses less digits than its factorization.

1210149720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1210149720 is about 34787.2062689719. The cubic root of 1210149720 is about 1065.6461859090.

Adding to 1210149720 its reverse (279410121), we get a palindrome (1489559841).

The spelling of 1210149720 in words is "one billion, two hundred ten million, one hundred forty-nine thousand, seven hundred twenty".