1212053154 has 32 divisors (see below), whose sum is σ = 2615492544. Its totient is φ = 372237120.

The previous prime is 1212053153. The next prime is 1212053177. The reversal of 1212053154 is 4513502121.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1212053153) 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, 27837 + ... + 56559.

It is an arithmetic number, because the mean of its divisors is an integer number (81734142).

Almost surely, 2^1212053154 is an apocalyptic number.

1212053154 is an abundant number, since it is smaller than the sum of its proper divisors (1403439390).

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

1212053154 is a wasteful number, since it uses less digits than its factorization.

1212053154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29282.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1212053154 is about 34814.5537670670. The cubic root of 1212053154 is about 1066.2046084468.

Adding to 1212053154 its reverse (4513502121), we get a palindrome (5725555275).

The spelling of 1212053154 in words is "one billion, two hundred twelve million, fifty-three thousand, one hundred fifty-four".