1210123490 has 64 divisors (see below), whose sum is σ = 2345207040. Its totient is φ = 448208640.

The previous prime is 1210123489. The next prime is 1210123511. The reversal of 1210123490 is 943210121.

It is a super-2 number, since 2×1210123490² = 2928797722099560200, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3047972 + ... + 3048368.

It is an arithmetic number, because the mean of its divisors is an integer number (36643860).

Almost surely, 2^1210123490 is an apocalyptic number.

1210123490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1210123490 is a deficient number, since it is larger than the sum of its proper divisors (1135083550).

1210123490 is a wasteful number, since it uses less digits than its factorization.

1210123490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1210123490 is about 34786.8292605118. The cubic root of 1210123490 is about 1065.6384865583.

The spelling of 1210123490 in words is "one billion, two hundred ten million, one hundred twenty-three thousand, four hundred ninety".