1214145940 has 24 divisors (see below), whose sum is σ = 2913950592. Its totient is φ = 416278560.

The previous prime is 1214145931. The next prime is 1214145949. The reversal of 1214145940 is 495414121.

It is an interprime number because it is at equal distance from previous prime (1214145931) and next prime (1214145949).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214145949) 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, 4336096 + ... + 4336375.

It is an arithmetic number, because the mean of its divisors is an integer number (121414608).

Almost surely, 2^1214145940 is an apocalyptic number.

1214145940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1214145940 is an abundant number, since it is smaller than the sum of its proper divisors (1699804652).

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

1214145940 is a wasteful number, since it uses less digits than its factorization.

1214145940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8672487 (or 8672485 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1214145940 is about 34844.5969986740. The cubic root of 1214145940 is about 1066.8179080251.

It can be divided in two parts, 12141 and 45940, that added together give a square (58081 = 241²).

The spelling of 1214145940 in words is "one billion, two hundred fourteen million, one hundred forty-five thousand, nine hundred forty".